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Keloids and Hypertrophic Scars: A Spectrum of Clinical Challenges

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Abstract

Since their earliest description, keloids and hypertrophic scars have beleaguered patients and clinicians alike. These scars can be aesthetically disfiguring, functionally debilitating, emotionally distressing, and psychologically damaging, culminating in a significant burden for patients. Our current understanding of keloid pathophysiology has grown and continues to advance while molecular biology, genetics, and technology provide ever-deepening insight into the nature of wound healing and the pathologic perturbations thereof. Greater understanding will lead to the development and application of refined therapeutic modalities. This article provides an overview of our current understanding of keloids, highlighting clinical characteristics and diagnostic criteria while providing a comprehensive summary of the many therapeutic modalities available. The proposed mechanism, application, adverse events, and reported efficacy of each modality is evaluated, and current recommendations are summarized.

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References

  1. Broughton G, Janis JE, Attinger CE. The basic science of wound healing. Plast Reconstr Surg. 2006;117(7 Suppl):12S–34S.

    Article  CAS  PubMed  Google Scholar 

  2. Murray JC. Keloids and hypertrophic scars. Clin Dermatol. 1994;12(1):27–37.

    Article  CAS  PubMed  Google Scholar 

  3. Robles DT, Berg D. Abnormal wound healing: keloids. Clin Dermatol. 2007;25(1):26–32.

    Article  PubMed  Google Scholar 

  4. Gauglitz GG, Korting HC, Pavicic T, Ruzicka T, Jeschke MG. Hypertrophic scarring and keloids: pathomechanisms and current and emerging treatment strategies. Mol Med. 2011;17(1–2):113–25.

    CAS  PubMed  PubMed Central  Google Scholar 

  5. Mancini RE, Quaife JV. Histogenesis of experimentally produced keloids. J Invest Dermatol. 1962;38:143–81.

    Article  CAS  PubMed  Google Scholar 

  6. Peacock EE, Madden JW, Trier WC. Biologic basis for the treatment of keloids and hypertrophic scars. South Med J. 1970;63(7):755–60.

    Article  PubMed  Google Scholar 

  7. Van den Broek LJ, Limandjaja GC, Niessen FB, Gibbs S. Human hypertrophic and keloid scar models: principles, limitations and future challenges from a tissue engineering perspective. Exp Dermatol. 2014;23(6):382–6.

    Article  PubMed  PubMed Central  CAS  Google Scholar 

  8. Bock O, Schmid-Ott G, Malewski P, Mrowietz U. Quality of life of patients with keloid and hypertrophic scarring. Arch Dermatol Res. 2006;297(10):433–8.

    Article  PubMed  Google Scholar 

  9. Gold MH, McGuire M, Mustoe TA, Pusic A, Sachdev M, Waibel J, et al. Updated international clinical recommendations on scar management: part 2–algorithms for scar prevention and treatment. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2014;40(8):825–31.

    CAS  Google Scholar 

  10. Rabello FB, Souza CD, Júnior JAF. Update on hypertrophic scar treatment. Clinics. 2014;69(8):565–73.

    Article  PubMed  PubMed Central  Google Scholar 

  11. Huang C, Murphy GF, Akaishi S, Ogawa R. Keloids and hypertrophic scars: update and future directions. Plast Reconstr Surg Glob Open. 2013;1(4):e25.

    Article  PubMed  PubMed Central  Google Scholar 

  12. Davidson S, Aziz N, Rashid RM, Khachemoune A. A primary care perspective on keloids. Medscape J Med. 2009;11(1):18.

    PubMed  PubMed Central  Google Scholar 

  13. Niessen FB, Spauwen PH, Schalkwijk J, Kon M. On the nature of hypertrophic scars and keloids: a review. Plast Reconstr Surg. 1999;104(5):1435–58.

    Article  CAS  PubMed  Google Scholar 

  14. Chike-Obi CJ, Cole PD, Brissett AE. Keloids: pathogenesis, clinical features, and management. Semin Plast Surg. 2009;23(3):178–84.

    Article  PubMed  PubMed Central  Google Scholar 

  15. Brissett AE, Sherris DA. Scar contractures, hypertrophic scars, and keloids. Facial Plast Surg FPS. 2001;17(4):263–72.

    Article  CAS  PubMed  Google Scholar 

  16. English RS, Shenefelt PD. Keloids and hypertrophic scars. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 1999;25(8):631–8.

    CAS  Google Scholar 

  17. Wolfram D, Tzankov A, Pülzl P, Piza-Katzer H. Hypertrophic scars and keloids—a review of their pathophysiology, risk factors, and therapeutic management. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2009;35(2):171–81.

    CAS  Google Scholar 

  18. Alhady SM, Sivanantharajah K. Keloids in various races. A review of 175 cases. Plast Reconstr Surg. 1969;44(6):564–6.

    Article  CAS  PubMed  Google Scholar 

  19. The surgical treatment of keloids. Plastic and reconstructive surgery [Internet]. LWW [cited 2015 May 5]. http://journals.lww.com/plasreconsurg/Fulltext/1961/04000/THE_SURGICAL_TREATMENT_OF_KELOIDS_.1.aspx. Accessed 28 Apr 2015.

  20. Yedomon GH, Adegbidi H, Atadokpede F, Akpadjan F, Mouto EJ, do Ango-Padonou F. Keloids on dark skin: a consecutive series of 456 cases. Méd Santé Trop. 2012;22(3):287–91.

  21. Lane JE, Waller JL, Davis LS. Relationship between age of ear piercing and keloid formation. Pediatrics. 2005;115(5):1312–4.

    Article  PubMed  Google Scholar 

  22. Manuskiatti W, Fitzpatrick RE. Treatment response of keloidal and hypertrophic sternotomy scars: comparison among intralesional corticosteroid, 5-fluorouracil, and 585-nm flashlamp-pumped pulsed-dye laser treatments. Arch Dermatol. 2002;138(9):1149–55.

    Article  CAS  PubMed  Google Scholar 

  23. Lawrence CM, Summerly ME. Keloid formation after BCG vaccination. The Practitioner. 1982;226(1364):326–8.

    CAS  PubMed  Google Scholar 

  24. Coop CA, Schaefer SM, England RW. Extensive keloid formation and progression after each vaccination. Hum Vaccin. 2007;3(4):127–9.

    Article  PubMed  Google Scholar 

  25. Cohen IK, Die-gelmann RF. Wound healing: biochemical and clinical aspects. Plast Reconstr Surg. 1992;90(5):926.

    Article  Google Scholar 

  26. Niessen FB, Spauwen PH, Robinson PH, Fidler V, Kon M. The use of silicone occlusive sheeting (Sil-K) and silicone occlusive gel (Epiderm) in the prevention of hypertrophic scar formation. Plast Reconstr Surg. 1998;102(6):1962–72.

    Article  CAS  PubMed  Google Scholar 

  27. Van der Veer WM, Ferreira JA, de Jong EH, Molema G, Niessen FB. Perioperative conditions affect long-term hypertrophic scar formation. Ann Plast Surg. 2010;65(3):321–5.

    Article  PubMed  CAS  Google Scholar 

  28. Lee S-S, Yosipovitch G, Chan Y-H, Goh C-L. Pruritus, pain, and small nerve fiber function in keloids: a controlled study. J Am Acad Dermatol. 2004;51(6):1002–6.

    Article  PubMed  Google Scholar 

  29. Dréno B. Assessing quality of life in patients with acne vulgaris: implications for treatment. Am J Clin Dermatol. 2006;7(2):99–106.

    Article  PubMed  Google Scholar 

  30. Amaral CSF do, March M de FBP, Sant’Anna CC. Quality of life in children and teenagers with atopic dermatitis. An Bras Dermatol. 2012;87(5):717–23.

  31. Chamlin SL, Chren M-M. Quality-of-life outcomes and measurement in childhood atopic dermatitis. Immunol Allergy Clin N Am. 2010;30(3):281–8.

    Article  Google Scholar 

  32. McKenna KE, Stern RS. The impact of psoriasis on the quality of life of patients from the 16-center PUVA follow-up cohort. J Am Acad Dermatol. 1997;36(3 Pt 1):388–94.

    Article  CAS  PubMed  Google Scholar 

  33. Kent G, Al’Abadie M. Psychologic effects of vitiligo: a critical incident analysis. J Am Acad Dermatol. 1996;35(6):895–8.

    Article  CAS  PubMed  Google Scholar 

  34. Furtado F, Hochman B, Ferrara SF, Dini GM, Nunes JMC, Juliano Y, et al. What factors affect the quality of life of patients with keloids? Rev Assoc Médica Bras 1992. 2009;55(6):700–4.

    Google Scholar 

  35. Butler PD, Longaker MT, Yang GP. Current progress in keloid research and treatment. J Am Coll Surg. 2008;206(4):731–41.

    Article  PubMed  Google Scholar 

  36. Lee JY-Y, Yang C-C, Chao S-C, Wong T-W. Histopathological differential diagnosis of keloid and hypertrophic scar. Am J Dermatopathol. 2004;26(5):379–84.

    Article  PubMed  Google Scholar 

  37. Moshref SS, Mufti ST. Keloid and hypertrophic scars: comparative histopathological and immunohistochemical study. J King Abdulaziz Univ-Med Sci. 2010;17(3):3–22.

  38. Hunasgi S, Koneru A, Vanishree M, Shamala R. Keloid: a case report and review of pathophysiology and differences between keloid and hypertrophic scars. J Oral Maxillofac Pathol JOMFP. 2013;17(1):116–20.

    Article  PubMed  Google Scholar 

  39. Ehrlich HP, Desmoulière A, Diegelmann RF, Cohen IK, Compton CC, Garner WL, et al. Morphological and immunochemical differences between keloid and hypertrophic scar. Am J Pathol. 1994;145(1):105–13.

    CAS  PubMed  PubMed Central  Google Scholar 

  40. Shaker SA, Ayuob NN, Hajrah NH. Cell talk: a phenomenon observed in the keloid scar by immunohistochemical study. Appl Immunohistochem Mol Morphol AIMM Off Publ Soc Appl Immunohistochem. 2011;19(2):153–9.

    Article  Google Scholar 

  41. Shih B, Bayat A. Genetics of keloid scarring. Arch Dermatol Res. 2010;302(5):319–39.

    Article  CAS  PubMed  Google Scholar 

  42. Omo-Dare P. Genetic studies on keloid. J Natl Med Assoc. 1975;67(6):428–32.

    CAS  PubMed  PubMed Central  Google Scholar 

  43. Bloom D. Heredity of keloids; review of the literature and report of a family with multiple keloids in five generations. N Y State J Med. 1956;56(4):511–9.

    CAS  PubMed  Google Scholar 

  44. Clark JA, Turner ML, Howard L, Stanescu H, Kleta R, Kopp JB. Description of familial keloids in five pedigrees: evidence for autosomal dominant inheritance and phenotypic heterogeneity. BMC Dermatol. 2009;9:8.

    Article  PubMed  PubMed Central  CAS  Google Scholar 

  45. Marneros AG, Norris JE, Olsen BR, Reichenberger E. Clinical genetics of familial keloids. Arch Dermatol. 2001;137(11):1429–34.

    Article  CAS  PubMed  Google Scholar 

  46. Chen Y, Gao J-H, Liu X-J, Yan X, Song M. Characteristics of occurrence for Han Chinese familial keloids. Burns. 2006;32(8):1052–9.

    Article  PubMed  Google Scholar 

  47. Nakashima M, Chung S, Takahashi A, Kamatani N, Kawaguchi T, Tsunoda T, et al. A genome-wide association study identifies four susceptibility loci for keloid in the Japanese population. Nat Genet. 2010;42(9):768–71.

    Article  CAS  PubMed  Google Scholar 

  48. Zhu F, Wu B, Li P, Wang J, Tang H, Liu Y, et al. Association study confirmed susceptibility loci with keloid in the Chinese Han population. PLoS One. 2013;8(5):e62377.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  49. Dong X, Mao S, Wen H. Upregulation of proinflammatory genes in skin lesions may be the cause of keloid formation (Review). Biomed Rep. 2013;1(6):833–6.

    CAS  PubMed  PubMed Central  Google Scholar 

  50. Darby IA, Laverdet B, Bonté F, Desmoulière A. Fibroblasts and myofibroblasts in wound healing. Clin Cosmet Investig Dermatol. 2014;6(7):301–11.

    Google Scholar 

  51. Nakaoka H, Miyauchi S, Miki Y. Proliferating activity of dermal fibroblasts in keloids and hypertrophic scars. Acta Derm Venereol. 1995;75(2):102–4.

    CAS  PubMed  Google Scholar 

  52. Sayah DN, Soo C, Shaw WW, Watson J, Messadi D, Longaker MT, et al. Downregulation of apoptosis-related genes in keloid tissues. J Surg Res. 1999;87(2):209–16.

    Article  CAS  PubMed  Google Scholar 

  53. De Felice B, Ciarmiello LF, Mondola P, Damiano S, Seru R, Argenziano C, et al. Differential p63 and p53 expression in human keloid fibroblasts and hypertrophic scar fibroblasts. DNA Cell Biol. 2007;26(8):541–7.

    Article  PubMed  CAS  Google Scholar 

  54. Messadi DV, Le A, Berg S, Jewett A, Wen Z, Kelly P, et al. Expression of apoptosis-associated genes by human dermal scar fibroblasts. Wound Repair Regen Off Publ Wound Heal Soc Eur Tissue Repair Soc. 1999;7(6):511–7.

    CAS  Google Scholar 

  55. Estrem SA, Domayer M, Bardach J, Cram AE. Implantation of human keloid into athymic mice. The Laryngoscope. 1987;97(10):1214–8.

    Article  CAS  PubMed  Google Scholar 

  56. Armour A, Scott PG, Tredget EE. Cellular and molecular pathology of HTS: basis for treatment. Wound Repair Regen Off Publ Wound Heal Soc Eur Tissue Repair Soc. 2007;15(Suppl 1):S6–17.

    Google Scholar 

  57. Lee TY, Chin GS, Kim WJ, Chau D, Gittes GK, Longaker MT. Expression of transforming growth factor beta 1, 2, and 3 proteins in keloids. Ann Plast Surg. 1999;43(2):179–84.

    CAS  PubMed  Google Scholar 

  58. Khoo YT, Ong CT, Mukhopadhyay A, Han HC, Do DV, Lim IJ, et al. Upregulation of secretory connective tissue growth factor (CTGF) in keratinocyte-fibroblast coculture contributes to keloid pathogenesis. J Cell Physiol. 2006;208(2):336–43.

    Article  CAS  PubMed  Google Scholar 

  59. Schmid P, Itin P, Cherry G, Bi C, Cox DA. Enhanced expression of transforming growth factor-beta type I and type II receptors in wound granulation tissue and hypertrophic scar. Am J Pathol. 1998;152(2):485–93.

    CAS  PubMed  PubMed Central  Google Scholar 

  60. Peltonen J, Hsiao LL, Jaakkola S, Sollberg S, Aumailley M, Timpl R, et al. Activation of collagen gene expression in keloids: co-localization of type I and VI collagen and transforming growth factor-beta 1 mRNA. J Invest Dermatol. 1991;97(2):240–8.

    Article  CAS  PubMed  Google Scholar 

  61. Xu J, Lamouille S, Derynck R. TGF-beta-induced epithelial to mesenchymal transition. Cell Res. 2009;19(2):156–72.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  62. Van Meeteren LA, ten Dijke P. Regulation of endothelial cell plasticity by TGF-β. Cell Tissue Res. 2012;347(1):177–86.

    Article  PubMed  PubMed Central  CAS  Google Scholar 

  63. Walraven M, Beelen RHJ, Ulrich MMW. Transforming growth factor-β (TGF-β) signaling in healthy human fetal skin: a descriptive study. J Dermatol Sci. 2015;78(2):117–24.

    Article  CAS  PubMed  Google Scholar 

  64. Xia W, Phan T-T, Lim IJ, Longaker MT, Yang GP. Complex epithelial-mesenchymal interactions modulate transforming growth factor-beta expression in keloid-derived cells. Wound Repair Regen Off Publ Wound Heal Soc Eur Tissue Repair Soc. 2004;12(5):546–56.

    Google Scholar 

  65. Igarashi A, Okochi H, Bradham DM, Grotendorst GR. Regulation of connective tissue growth factor gene expression in human skin fibroblasts and during wound repair. Mol Biol Cell. 1993;4(6):637–45.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  66. Ghosh AK, Vaughan DE. PAI-1 in tissue fibrosis. J Cell Physiol. 2012;227(2):493–507.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  67. He S, Liu X, Yang Y, Huang W, Xu S, Yang S, et al. Mechanisms of transforming growth factor beta(1)/Smad signalling mediated by mitogen-activated protein kinase pathways in keloid fibroblasts. Br J Dermatol. 2010;162(3):538–46.

    Article  CAS  PubMed  Google Scholar 

  68. Tuan T-L, Wu H, Huang EY, Chong SSN, Laug W, Messadi D, et al. Increased plasminogen activator inhibitor-1 in keloid fibroblasts may account for their elevated collagen accumulation in fibrin gel cultures. Am J Pathol. 2003;162(5):1579–89.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  69. Tuan T-L, Hwu P, Ho W, Yiu P, Chang R, Wysocki A, et al. Adenoviral overexpression and small interfering RNA suppression demonstrate that plasminogen activator inhibitor-1 produces elevated collagen accumulation in normal and keloid fibroblasts. Am J Pathol. 2008;173(5):1311–25.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  70. Lu F, Gao J, Ogawa R, Hyakusoku H. Variations in gap junctional intercellular communication and connexin expression in fibroblasts derived from keloid and hypertrophic scars. Plast Reconstr Surg. 2007;119(3):844–51.

    Article  CAS  PubMed  Google Scholar 

  71. Hu D, Zhu X, Xu M, Chen B, Margaret AH, George WC. The inhibitory effect of tamoxifen on human dermal fibroblast-populated collagen lattices. Zhonghua Zheng Xing Wai Ke Za Zhi Zhonghua Zhengxing Waike Zazhi Chin J Plast Surg. 2002;18(3):160–2.

    Google Scholar 

  72. Chau D, Mancoll JS, Lee S, Zhao J, Phillips LG, Gittes GK, et al. Tamoxifen downregulates TGF-beta production in keloid fibroblasts. Ann Plast Surg. 1998;40(5):490–3.

    Article  CAS  PubMed  Google Scholar 

  73. Carthy JM, Sundqvist A, Heldin A, van Dam H, Kletsas D, Heldin C-H, et al. Tamoxifen inhibits TGF-β-mediated activation of myofibroblasts by blocking non-Smad signaling through ERK1/2. J Cell Physiol. 2015;230(12):3084–92.

    Article  CAS  PubMed  Google Scholar 

  74. Messadi DV, Doung HS, Zhang Q, Kelly AP, Tuan T-L, Reichenberger E, et al. Activation of NFkappaB signal pathways in keloid fibroblasts. Arch Dermatol Res. 2004;296(3):125–33.

    CAS  PubMed  Google Scholar 

  75. Makino S, Mitsutake N, Nakashima M, Saenko VA, Ohtsuru A, Umezawa K, et al. DHMEQ, a novel NF-kappaB inhibitor, suppresses growth and type I collagen accumulation in keloid fibroblasts. J Dermatol Sci. 2008;51(3):171–80.

    Article  CAS  PubMed  Google Scholar 

  76. Wynn TA. Fibrotic disease and the TH1/TH2 paradigm. Nat Rev Immunol. 2004;4(8):583–94.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  77. Murao N, Seino K-I, Hayashi T, Ikeda M, Funayama E, Furukawa H, et al. Treg-enriched CD4+ T cells attenuate collagen synthesis in keloid fibroblasts. Exp Dermatol. 2014;23(4):266–71.

    Article  CAS  PubMed  Google Scholar 

  78. Gupta S, Sharma VK. Standard guidelines of care: keloids and hypertrophic scars. Indian J Dermatol Venereol Leprol. 2011;77(1):94–100.

    Article  PubMed  Google Scholar 

  79. Cotterill JA, Cunliffe WJ. Suicide in dermatological patients. Br J Dermatol. 1997;137(2):246–50.

    Article  CAS  PubMed  Google Scholar 

  80. Gupta MA, Gupta AK. Depression and suicidal ideation in dermatology patients with acne, alopecia areata, atopic dermatitis and psoriasis. Br J Dermatol. 1998;139(5):846–50.

    Article  CAS  PubMed  Google Scholar 

  81. McCoy BJ, Diegelmann RF, Cohen IK. In vitro inhibition of cell growth, collagen synthesis, and prolyl hydroxylase activity by triamcinolone acetonide. Proc Soc Exp Biol Med Soc Exp Biol Med N Y N. 1980;163(2):216–22.

    Article  CAS  Google Scholar 

  82. Ardehali B, Nouraei SAR, Van Dam H, Dex E, Wood S, Nduka C. Objective assessment of keloid scars with three-dimensional imaging: quantifying response to intralesional steroid therapy. Plast Reconstr Surg. 2007;119(2):556–61.

    Article  CAS  PubMed  Google Scholar 

  83. Muneuchi G, Suzuki S, Onodera M, Ito O, Hata Y, Igawa HH. Long-term outcome of intralesional injection of triamcinolone acetonide for the treatment of keloid scars in Asian patients. Scand J Plast Reconstr Surg Hand Surg Nord Plast Foren Nord Klubb Handkirurgi. 2006;40(2):111–6.

    Article  Google Scholar 

  84. Mustoe TA, Cooter RD, Gold MH, Hobbs FDR, Ramelet A-A, Shakespeare PG, et al. International clinical recommendations on scar management. Plast Reconstr Surg. 2002;110(2):560–71.

    Article  PubMed  Google Scholar 

  85. Gold MH, Berman B, Clementoni MT, Gauglitz GG, Nahai F, Murcia C. Updated international clinical recommendations on scar management: part 1–evaluating the evidence. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2014;40(8):817–24.

    CAS  Google Scholar 

  86. Darougheh A, Asilian A, Shariati F. Intralesional triamcinolone alone or in combination with 5-fluorouracil for the treatment of keloid and hypertrophic scars. Clin Exp Dermatol. 2009;34(2):219–23.

    Article  CAS  PubMed  Google Scholar 

  87. Davison SP, Dayan JH, Clemens MW, Sonni S, Wang A, Crane A. Efficacy of intralesional 5-fluorouracil and triamcinolone in the treatment of keloids. Aesthet Surg J Am Soc Aesthetic Plast Surg. 2009;29(1):40–6.

    Article  Google Scholar 

  88. Apikian M, Goodman G. Intralesional 5-fluorouracil in the treatment of keloid scars. Australas J Dermatol. 2004;45(2):140–3.

    Article  PubMed  Google Scholar 

  89. Khan MA, Bashir MM, Khan FA. Intralesional triamcinolone alone and in combination with 5-fluorouracil for the treatment of keloid and hypertrophic scars. JPMA J Pak Med Assoc. 2014;64(9):1003–7.

    PubMed  Google Scholar 

  90. Sharma S, Bhanot A, Kaur A, Dewan SP. Role of liquid nitrogen alone compared with combination of liquid nitrogen and intralesional triamcinolone acetonide in treatment of small keloids. J Cosmet Dermatol. 2007;6(4):258–61.

    Article  PubMed  Google Scholar 

  91. Hirshowitz B, Lerner D, Moscona AR. Treatment of keloid scars by combined cryosurgery and intralesional corticosteroids. Aesthetic Plast Surg. 1982;6(3):153–8.

    Article  CAS  PubMed  Google Scholar 

  92. Weshahy AH, Abdel Hay R. Intralesional cryosurgery and intralesional steroid injection: a good combination therapy for treatment of keloids and hypertrophic scars. Dermatol Ther. 2012;25(3):273–6.

    Article  PubMed  Google Scholar 

  93. Oliaei S, Nelson JS, Fitzpatrick R, Wong BJF. Laser treatment of scars. Facial Plast Surg FPS. 2012;28(5):518–24.

    Article  CAS  PubMed  Google Scholar 

  94. Berman B, Bieley HC. Adjunct therapies to surgical management of keloids. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 1996;22(2):126–30.

    CAS  Google Scholar 

  95. Lawrence WT. In search of the optimal treatment of keloids: report of a series and a review of the literature. Ann Plast Surg. 1991;27(2):164–78.

    Article  CAS  PubMed  Google Scholar 

  96. Tang YW. Intra- and postoperative steroid injections for keloids and hypertrophic scars. Br J Plast Surg. 1992;45(5):371–3.

    Article  CAS  PubMed  Google Scholar 

  97. Amici J-M. Early hypertrophic scar after surgery on the nasal region: value of long-acting corticosteroid injections. Ann Dermatol Vénéréol. 2014;141(1):7–13.

    Article  PubMed  Google Scholar 

  98. Chen MA, Davidson TM. Scar management: prevention and treatment strategies. Curr Opin Otolaryngol Head Neck Surg. 2005;13(4):242–7.

    Article  PubMed  Google Scholar 

  99. Chowdri NA, Masarat M, Mattoo A, Darzi MA. Keloids and hypertrophic scars: results with intraoperative and serial postoperative corticosteroid injection therapy. Aust N Z J Surg. 1999;69(9):655–9.

    Article  CAS  PubMed  Google Scholar 

  100. Juckett G, Hartman-Adams H. Management of keloids and hypertrophic scars. Am Fam Physician. 2009;80(3):253–60.

    PubMed  Google Scholar 

  101. Stucker FJ, Shaw GY. An approach to management of keloids. Arch Otolaryngol Head Neck Surg. 1992;118(1):63–7.

    Article  CAS  PubMed  Google Scholar 

  102. Friedman SJ, Butler DF, Pittelkow MR. Perilesional linear atrophy and hypopigmentation after intralesional corticosteroid therapy. Report of two cases and review of the literature. J Am Acad Dermatol. 1988;19(3):537–41.

    Article  CAS  PubMed  Google Scholar 

  103. Kelly AP. Medical and surgical therapies for keloids. Dermatol Ther. 2004;17(2):212–8.

    Article  PubMed  Google Scholar 

  104. Kelly AP. Update on the management of keloids. Semin Cutan Med Surg. 2009;28(2):71–6.

    Article  CAS  PubMed  Google Scholar 

  105. Kim DY, Kim ES, Eo SR, Kim KS, Lee SY, Cho BH. A surgical approach for earlobe keloid: keloid fillet flap. Plast Reconstr Surg. 2004;113(6):1668–74.

    Article  PubMed  Google Scholar 

  106. Lee Y, Minn KW, Baek RM, Hong JJ. A new surgical treatment of keloid: keloid core excision. Ann Plast Surg. 2001;46(2):135–40.

    Article  CAS  PubMed  Google Scholar 

  107. Rudolph R. Wide spread scars, hypertrophic scars, and keloids. Clin Plast Surg. 1987;14(2):253–60.

    CAS  PubMed  Google Scholar 

  108. Yang J-Y, Yang S-Y. Are auricular keloids and persistent hypertrophic scars resectable? The role of intrascar excision. Ann Plast Surg. 2012;69(6):637–42.

    Article  CAS  PubMed  Google Scholar 

  109. Martin-García RF, Busquets AC. Postsurgical use of imiquimod 5 % cream in the prevention of earlobe keloid recurrences: results of an open-label, pilot study. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2005;31(11 Pt 1):1394–8.

    Google Scholar 

  110. Stashower ME. Successful treatment of earlobe keloids with imiquimod after tangential shave excision. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2006;32(3):380–6.

    CAS  Google Scholar 

  111. Urioste SS, Arndt KA, Dover JS. Keloids and hypertrophic scars: review and treatment strategies. Semin Cutan Med Surg. 1999;18(2):159–71.

    Article  CAS  PubMed  Google Scholar 

  112. Sherris DA, Larrabee WF, Murakami CS. Management of scar contractures, hypertrophic scars, and keloids. Otolaryngol Clin N Am. 1995;28(5):1057–68.

    CAS  Google Scholar 

  113. Berman B, Bieley HC. Keloids. J Am Acad Dermatol. 1995;33(1):117–23.

    Article  CAS  PubMed  Google Scholar 

  114. Sidle DM, Kim H. Keloids: prevention and management. Facial Plast Surg Clin N Am. 2011;19(3):505–15.

    Article  Google Scholar 

  115. Van Leeuwen MCE, Stokmans SC, Bulstra A-EJ, Meijer OWM, van Leeuwen PAM, Niessen FB. High-dose-rate brachytherapy for the treatment of recalcitrant keloids: a unique, effective treatment protocol. Plast Reconstr Surg. 2014;134(3):527–34.

    Article  PubMed  CAS  Google Scholar 

  116. Rusciani L, Rossi G, Bono R. Use of cryotherapy in the treatment of keloids. J Dermatol Surg Oncol. 1993;19(6):529–34.

    Article  CAS  PubMed  Google Scholar 

  117. Zimmerman EE, Crawford P. Cutaneous cryosurgery. Am Fam Physician. 2012;86(12):1118–24.

    PubMed  Google Scholar 

  118. Ernst K, Hundeiker M. Results of cryosurgery in 394 patients with hypertrophic scars and keloids. Hautarzt Z Für Dermatol Venerol Verwandte Geb. 1995;46(7):462–6.

    Article  CAS  Google Scholar 

  119. Zouboulis CC, Blume U, Büttner P, Orfanos CE. Outcomes of cryosurgery in keloids and hypertrophic scars. A prospective consecutive trial of case series. Arch Dermatol. 1993;129(9):1146–51.

    Article  CAS  PubMed  Google Scholar 

  120. Van Leeuwen MCE, Bulstra AEJ, Ket JCF, Ritt MJPF, van Leeuwen PAM, Niessen FB. Intralesional cryotherapy for the treatment of keloid scars: evaluating effectiveness. Plast Reconstr Surg Glob Open [Internet]. 2015 Jul 8 [cited 2015 Aug 25];3(6). http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4494507/. Accessed 25 Aug 2015.

  121. Layton AM, Yip J, Cunliffe WJ. A comparison of intralesional triamcinolone and cryosurgery in the treatment of acne keloids. Br J Dermatol. 1994;130(4):498–501.

    Article  CAS  PubMed  Google Scholar 

  122. Fikrle T, Pizinger K. Cryosurgery in the treatment of earlobe keloids: report of seven cases. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2005;31(12):1728–31.

    CAS  Google Scholar 

  123. Stromps J-P, Dunda S, Eppstein R-J, Babic D, Har-Shai Y, Pallua N. Intralesional cryosurgery combined with topical silicone gel sheeting for the treatment of refractory keloids. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2014;40(9):996–1003.

    CAS  Google Scholar 

  124. Ceilley RI, Babin RW. The combined use of cryosurgery and intralesional injections of suspensions of fluorinated adrenocorticosteroids for reducing keloids and hypertrophic scars. J Dermatol Surg Oncol. 1979;5(1):54–6.

    Article  CAS  PubMed  Google Scholar 

  125. Mirmovich O, Gil T, Goldin I, Lavi I, Mettanes I, Har-Shai Y. Pain evaluation and control during and following the treatment of hypertrophic scars and keloids by contact and intralesional cryosurgery—a preliminary study. J Eur Acad Dermatol Venereol JEADV. 2012;26(4):440–7.

    Article  CAS  PubMed  Google Scholar 

  126. Cook DK, Georgouras K. Complications of cutaneous cryotherapy. Med J Aust. 1994;161(3):210–3.

    CAS  PubMed  Google Scholar 

  127. Van Leeuwen MCE, van der Wal MBA, Bulstra A-EJ, Galindo-Garre F, Molier J, van Zuijlen PPM, et al. Intralesional cryotherapy for treatment of keloid scars: a prospective study. Plast Reconstr Surg. 2015;135(2):580–9.

    Article  PubMed  CAS  Google Scholar 

  128. Apfelberg DB, Maser MR, Lash H, White D, Weston J. Preliminary results of argon and carbon dioxide laser treatment of keloid scars. Lasers Surg Med. 1984;4(3):283–90.

    Article  CAS  PubMed  Google Scholar 

  129. Henning JPH, Roskam Y, van Gemert MJ. Treatment of keloids and hypertrophic scars with an argon laser. Lasers Surg Med. 1986;6(1):72–5.

    Article  Google Scholar 

  130. Kantor GR, Wheeland RG, Bailin PL, Walker NP, Ratz JL. Treatment of earlobe keloids with carbon dioxide laser excision: a report of 16 cases. J Dermatol Surg Oncol. 1985;11(11):1063–7.

    Article  CAS  PubMed  Google Scholar 

  131. Apfelberg DB, Maser MR, White DN, Lash H. Failure of carbon dioxide laser excision of keloids. Lasers Surg Med. 1989;9(4):382–8.

    Article  CAS  PubMed  Google Scholar 

  132. Norris JE. The effect of carbon dioxide laser surgery on the recurrence of keloids. Plast Reconstr Surg. 1991;87(1):44–9 (discussion 50–3).

    Article  CAS  PubMed  Google Scholar 

  133. Bernstein LJ, Kauvar AN, Grossman MC, Geronemus RG. Scar resurfacing with high-energy, short-pulsed and flashscanning carbon dioxide lasers. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 1998;24(1):101–7.

    CAS  Google Scholar 

  134. Campolmi P, Bonan P, Cannarozzo G, Bassi A, Bruscino N, Arunachalam M, et al. Highlights of thirty-year experience of CO2 laser use at the Florence (Italy) department of dermatology. Sci World J. 2012;2012:546528.

    Article  Google Scholar 

  135. Scrimali L, Lomeo G, Nolfo C, Pompili G, Tamburino S, Catalani A, et al. Treatment of hypertrophic scars and keloids with a fractional CO2 laser: a personal experience. J Cosmet Laser Ther Off Publ Eur Soc Laser Dermatol. 2010;12(5):218–21.

    Article  Google Scholar 

  136. Abergel RP, Meeker CA, Lam TS, Dwyer RM, Lesavoy MA, Uitto J. Control of connective tissue metabolism by lasers: recent developments and future prospects. J Am Acad Dermatol. 1984;11(6):1142–50.

    Article  CAS  PubMed  Google Scholar 

  137. Kumar K, Kapoor BS, Rai P, Shukla HS. In-situ irradiation of keloid scars with Nd:YAG laser. J Wound Care. 2000;9(5):213–5.

    Article  CAS  PubMed  Google Scholar 

  138. Kwon SD, Kye YC. Treatment of scars with a pulsed Er:YAG laser. J Cutan Laser Ther. 2000;2(1):27–31.

    Article  CAS  PubMed  Google Scholar 

  139. Koike S, Akaishi S, Nagashima Y, Dohi T, Hyakusoku H, Ogawa R. Nd:YAG laser treatment for keloids and hypertrophic scars: an analysis of 102 cases. Plast Reconstr Surg Glob Open. 2014;2(12):e272.

    Article  PubMed  PubMed Central  Google Scholar 

  140. Nd:YAG laser treatment of keloids and hypertrophic scars [Internet]. [cited 2015 Sep 6]. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3258100/. Accessed 6 Sep 2015.

  141. Anderson RR, Parrish JA. Selective photothermolysis: precise microsurgery by selective absorption of pulsed radiation. Science. 1983;220(4596):524–7.

    Article  CAS  PubMed  Google Scholar 

  142. Reiken SR, Wolfort SF, Berthiaume F, Compton C, Tompkins RG, Yarmush ML. Control of hypertrophic scar growth using selective photothermolysis. Lasers Surg Med. 1997;21(1):7–12.

    Article  CAS  PubMed  Google Scholar 

  143. Kuo Y-R, Jeng S-F, Wang F-S, Chen T-H, Huang H-C, Chang P-R, et al. Flashlamp pulsed dye laser (PDL) suppression of keloid proliferation through down-regulation of TGF-beta1 expression and extracellular matrix expression. Lasers Surg Med. 2004;34(2):104–8.

    Article  PubMed  Google Scholar 

  144. Kuo Y-R, Wu W-S, Jeng S-F, Huang H-C, Yang KD, Sacks JM, et al. Activation of ERK and p38 kinase mediated keloid fibroblast apoptosis after flashlamp pulsed-dye laser treatment. Lasers Surg Med. 2005;36(1):31–7.

    Article  PubMed  Google Scholar 

  145. Karsai S, Roos S, Hammes S, Raulin C. Pulsed dye laser: what’s new in non-vascular lesions? J Eur Acad Dermatol Venereol JEADV. 2007;21(7):877–90.

    Article  CAS  PubMed  Google Scholar 

  146. Alster TS, Kurban AK, Grove GL, Grove MJ, Tan OT. Alteration of argon laser-induced scars by the pulsed dye laser. Lasers Surg Med. 1993;13(3):368–73.

    Article  CAS  PubMed  Google Scholar 

  147. Alster TS. Improvement of erythematous and hypertrophic scars by the 585-nm flashlamp-pumped pulsed dye laser. Ann Plast Surg. 1994;32(2):186–90.

    Article  CAS  PubMed  Google Scholar 

  148. Dierickx C, Goldman MP, Fitzpatrick RE. Laser treatment of erythematous/hypertrophic and pigmented scars in 26 patients. Plast Reconstr Surg. 1995;95(1):84–90 (discussion 91–2).

    Article  CAS  PubMed  Google Scholar 

  149. Connell PG, Harland CC. Treatment of keloid scars with pulsed dye laser and intralesional steroid. J Cutan Laser Ther. 2000;2(3):147–50.

    Article  CAS  PubMed  Google Scholar 

  150. Chan HH, Wong DSY, Ho WS, Lam LK, Wei W. The use of pulsed dye laser for the prevention and treatment of hypertrophic scars in chinese persons. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2004;30(7):987–94 (discussion 994).

    Google Scholar 

  151. McCraw JB, McCraw JA, McMellin A, Bettencourt N. Prevention of unfavorable scars using early pulse dye laser treatments: a preliminary report. Ann Plast Surg. 1999;42(1):7–14.

    Article  CAS  PubMed  Google Scholar 

  152. Goldman MP, Fitzpatrick RE. Laser treatment of scars. Dermatol Surg. 1995;21(8):685–7.

    Article  CAS  PubMed  Google Scholar 

  153. Wittenberg GP, Fabian BG, Bogomilsky JL, Schultz LR, Rudner EJ, Chaffins ML, et al. Prospective, single-blind, randomized, controlled study to assess the efficacy of the 585-nm flashlamp-pumped pulsed-dye laser and silicone gel sheeting in hypertrophic scar treatment. Arch Dermatol. 1999;135(9):1049–55.

    Article  CAS  PubMed  Google Scholar 

  154. Gold MH. Update on fractional laser technology. J Clin Aesthetic Dermatol. 2010;3(1):42–50.

    Google Scholar 

  155. El-Zawahry BM, Sobhi RM, Bassiouny DA, Tabak SA. Ablative CO2 fractional resurfacing in treatment of thermal burn scars: an open-label controlled clinical and histopathological study. J Cosmet Dermatol. 2015;14(4):324–31.

  156. Makboul M, Makboul R, Abdelhafez AH, Hassan SS, Youssif SM. Evaluation of the effect of fractional CO2 laser on histopathological picture and TGF-β1 expression in hypertrophic scar. J Cosmet Dermatol. 2014;13(3):169–79.

    Article  PubMed  Google Scholar 

  157. Cavalié M, Sillard L, Montaudié H, Bahadoran P, Lacour J-P, Passeron T. Treatment of keloids with laser-assisted topical steroid delivery: a retrospective study of 23 cases. Dermatol Ther. 2015;28(2):74–8.

    Article  PubMed  Google Scholar 

  158. Singhal M, Del Rio-Sancho S, Sonaje K, Kalia YN. fractional laser ablation for the cutaneous delivery of triamcinolone acetonide from cryomilled polymeric microparticles: creating intra-epidermal drug depots. Mol Pharm. 2016.

  159. Alster TS, Tanzi EL. Hypertrophic scars and keloids: etiology and management. Am J Clin Dermatol. 2003;4(4):235–43.

    Article  PubMed  Google Scholar 

  160. Linares HA, Larson DL, Willis-Galstaun BA. Historical notes on the use of pressure in the treatment of hypertrophic scars or keloids. Burns J Int Soc Burn Inj. 1993;19(1):17–21.

    Article  CAS  Google Scholar 

  161. Baur PS, Larson DL, Stacey TR, Barratt GF, Dobrkovsky M. Ultrastructural analysis of pressure-treated human hypertrophic scars. J Trauma. 1976;16(12):958–67.

    Article  CAS  PubMed  Google Scholar 

  162. Kischer CW, Shetlar MR, Shetlar CL. Alteration of hypertrophic scars induced by mechanical pressure. Arch Dermatol. 1975;111(1):60–4.

    Article  CAS  PubMed  Google Scholar 

  163. Staley MJ, Richard RL. Use of pressure to treat hypertrophic burn scars. Adv Wound Care J Prev Heal. 1997;10(3):44–6.

    CAS  Google Scholar 

  164. Costa AM, Peyrol S, Pôrto LC, Comparin JP, Foyatier JL, Desmoulière A. Mechanical forces induce scar remodeling. Study in non-pressure-treated versus pressure-treated hypertrophic scars. Am J Pathol. 1999;155(5):1671–9.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  165. Renò F, Sabbatini M, Stella M, Magliacani G, Cannas M. Effect of in vitro mechanical compression on Epilysin (matrix metalloproteinase-28) expression in hypertrophic scars. Wound Repair Regen Off Publ Wound Heal Soc Eur Tissue Repair Soc. 2005;13(3):255–61.

    Google Scholar 

  166. Renò F, Sabbatini M, Lombardi F, Stella M, Pezzuto C, Magliacani G, et al. In vitro mechanical compression induces apoptosis and regulates cytokines release in hypertrophic scars. Wound Repair Regen Off Publ Wound Heal Soc Eur Tissue Repair Soc. 2003;11(5):331–6.

    Google Scholar 

  167. Haq MA, Haq A. Pressure therapy in treatment of hypertrophic scar, burn contracture and keloid: the Kenyan experience. East Afr Med J. 1990;67(11):785–93.

    CAS  PubMed  Google Scholar 

  168. Ward RS. Pressure therapy for the control of hypertrophic scar formation after burn injury. A history and review. J Burn Care Rehabil. 1991;12(3):257–62.

    Article  CAS  PubMed  Google Scholar 

  169. Atkinson J-AM, McKenna KT, Barnett AG, McGrath DJ, Rudd M. A randomized, controlled trial to determine the efficacy of paper tape in preventing hypertrophic scar formation in surgical incisions that traverse Langer’s skin tension lines. Plast Reconstr Surg. 2005;116(6):1648–56 (discussion 1657–8).

    Article  CAS  PubMed  Google Scholar 

  170. Goldwyn RM. The ultrastructure of collagen: its relation to the healing of wounds and the management of hypertrophic scar. Arch Surg. 1977;112(1):103-103.

    Google Scholar 

  171. Johnson J, Greenspan B, Gorga D, Nagler W, Goodwin C. Compliance with pressure garment use in burn rehabilitation. J Burn Care Rehabil. 1994;15(2):180–8.

    Article  CAS  PubMed  Google Scholar 

  172. Kealey GP, Jensen KL, Laubenthal KN, Lewis RW. Prospective randomized comparison of two types of pressure therapy garments. J Burn Care Rehabil. 1990;11(4):334–6.

    Article  CAS  PubMed  Google Scholar 

  173. Cheng JC, Evans JH, Leung KS, Clark JA, Choy TT, Leung PC. Pressure therapy in the treatment of post-burn hypertrophic scar—a critical look into its usefulness and fallacies by pressure monitoring. Burns Incl Therm Inj. 1984;10(3):154–63.

    Article  CAS  PubMed  Google Scholar 

  174. Macintyre L, Baird M. Pressure garments for use in the treatment of hypertrophic scars—an evaluation of current construction techniques in NHS hospitals. Burns J Int Soc Burn Inj. 2005;31(1):11–4.

    Article  Google Scholar 

  175. Leung PC, Ng M. Pressure treatment for hypertrophic scars resulting from. Burns. 1980;6(4):244–50.

    Article  Google Scholar 

  176. Chang P, Laubenthal KN, Lewis RW, Rosenquist MD, Lindley-Smith P, Kealey GP. Prospective, randomized study of the efficacy of pressure garment therapy in patients with burns. J Burn Care Rehabil. 1995;16(5):473–5.

    Article  CAS  PubMed  Google Scholar 

  177. Anzarut A, Olson J, Singh P, Rowe BH, Tredget EE. The effectiveness of pressure garment therapy for the prevention of abnormal scarring after burn injury: a meta-analysis. J Plast Reconstr Aesthetic Surg JPRAS. 2009;62(1):77–84.

    Article  Google Scholar 

  178. Fulton JE. Silicone gel sheeting for the prevention and management of evolving hypertrophic and keloid scars. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 1995;21(11):947–51.

    Google Scholar 

  179. Quinn KJ, Evans JH, Courtney JM, Gaylor JD, Reid WH. Non-pressure treatment of hypertrophic scars. Burns Incl Therm Inj. 1985;12(2):102–8.

    Article  CAS  PubMed  Google Scholar 

  180. Sawada Y, Sone K. Treatment of scars and keloids with a cream containing silicone oil. Br J Plast Surg. 1990;43(6):683–8.

    Article  CAS  PubMed  Google Scholar 

  181. De Oliveira GV, Nunes TA, Magna LA, Cintra ML, Kitten GT, Zarpellon S, et al. Silicone versus nonsilicone gel dressings: a controlled trial. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2001;27(8):721–6.

    Google Scholar 

  182. Gold MH. Topical silicone gel sheeting in the treatment of hypertrophic scars and keloids. A dermatologic experience. J Dermatol Surg Oncol. 1993;19(10):912–6.

    Article  CAS  PubMed  Google Scholar 

  183. Dockery GL, Nilson RZ. Treatment of hypertrophic and keloid scars with SILASTIC Gel Sheeting. J Foot Ankle Surg Off Publ Am Coll Foot Ankle Surg. 1994;33(2):110–9.

    CAS  Google Scholar 

  184. Katz BE. Silicone gel sheeting in scar therapy. Cutis. 1995;56(1):65–7.

    CAS  PubMed  Google Scholar 

  185. Perkins K, Davey RB, Wallis KA. Silicone gel: a new treatment for burn scars and contractures. Burns Incl Therm Inj. 1983;9(3):201–4.

    Article  CAS  PubMed  Google Scholar 

  186. Quinn KJ. Silicone gel in scar treatment. Burns Incl Therm Inj. 1987;13(Suppl):S33–40.

    Article  PubMed  Google Scholar 

  187. Ahn ST, Monafo WW, Mustoe TA. Topical silicone gel: a new treatment for hypertrophic scars. Surgery. 1989;106(4):781–6 (discussion 786–7).

    CAS  PubMed  Google Scholar 

  188. Ahn ST, Monafo WW, Mustoe TA. Topical silicone gel for the prevention and treatment of hypertrophic scar. Arch Surg Chic Ill 1960. 1991;126(4):499–504.

    CAS  Google Scholar 

  189. Carney SA, Cason CG, Gowar JP, Stevenson JH, McNee J, Groves AR, et al. Cica-Care gel sheeting in the management of hypertrophic scarring. Burns J Int Soc Burn Inj. 1994;20(2):163–7.

    Article  CAS  Google Scholar 

  190. Gold MH, Foster TD, Adair MA, Burlison K, Lewis T. Prevention of hypertrophic scars and keloids by the prophylactic use of topical silicone gel sheets following a surgical procedure in an office setting. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2001;27(7):641–4.

    CAS  Google Scholar 

  191. O’Brien L, Pandit A. Silicon gel sheeting for preventing and treating hypertrophic and keloid scars. Cochrane Database Syst Rev. 2006;1:CD003826.

    PubMed  Google Scholar 

  192. Poston J. The use of silicone gel sheeting in the management of hypertrophic and keloid scars. J Wound Care. 2000;9(1):10–6.

    Article  CAS  PubMed  Google Scholar 

  193. O’Brien L, Jones DJ. Silicone gel sheeting for preventing and treating hypertrophic and keloid scars. Cochrane Database Syst Rev. 2013;9:CD003826.

    PubMed  Google Scholar 

  194. Mustoe TA. Evolution of silicone therapy and mechanism of action in scar management. Aesthet Plast Surg. 2008;32(1):82–92.

    Article  Google Scholar 

  195. De Giorgi V, Sestini S, Mannone F, Papi F, Alfaioli B, Gori A, et al. The use of silicone gel in the treatment of fresh surgical scars: a randomized study. Clin Exp Dermatol. 2009;34(6):688–93.

    Article  PubMed  Google Scholar 

  196. Kwon SY, Park SD, Park K. Comparative effect of topical silicone gel and topical tretinoin cream for the prevention of hypertrophic scar and keloid formation and the improvement of scars. J Eur Acad Dermatol Venereol JEADV. 2014;28(8):1025–33.

    Article  CAS  PubMed  Google Scholar 

  197. Fitzpatrick RE. Treatment of inflamed hypertrophic scars using intralesional 5-FU. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 1999;25(3):224–32.

    CAS  Google Scholar 

  198. Gupta S, Kalra A. Efficacy and safety of intralesional 5-fluorouracil in the treatment of keloids. Dermatol Basel Switz. 2002;204(2):130–2.

    Article  CAS  Google Scholar 

  199. Haurani MJ, Foreman K, Yang JJ, Siddiqui A. 5-Fluorouracil treatment of problematic scars. Plast Reconstr Surg. 2009;123(1):139–48 (discussion 149–51).

    Article  CAS  PubMed  Google Scholar 

  200. Asilian A, Darougheh A, Shariati F. New combination of triamcinolone, 5-Fluorouracil, and pulsed-dye laser for treatment of keloid and hypertrophic scars. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2006;32(7):907–15.

    CAS  Google Scholar 

  201. Kontochristopoulos G, Stefanaki C, Panagiotopoulos A, Stefanaki K, Argyrakos T, Petridis A, et al. Intralesional 5-fluorouracil in the treatment of keloids: an open clinical and histopathologic study. J Am Acad Dermatol. 2005;52(3 Pt 1):474–9.

    Article  PubMed  Google Scholar 

  202. Jacob SE, Berman B, Nassiri M, Vincek V. Topical application of imiquimod 5 % cream to keloids alters expression genes associated with apoptosis. Br J Dermatol. 2003;149(Suppl 66):62–5.

    Article  CAS  PubMed  Google Scholar 

  203. Tyring S. Imiquimod applied topically: a novel immune response modifier. Skin Ther Lett. 2001;6(6):1–4.

    Google Scholar 

  204. Berman B, Kaufman J. Pilot study of the effect of postoperative imiquimod 5 % cream on the recurrence rate of excised keloids. J Am Acad Dermatol. 2002;47(4 Suppl):S209–11.

    Article  PubMed  Google Scholar 

  205. Patel PJ, Skinner RB. Experience with keloids after excision and application of 5 % imiquimod cream. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2006;32(3):462.

    CAS  Google Scholar 

  206. Malhotra AK, Gupta S, Khaitan BK, Sharma VK. Imiquimod 5 % cream for the prevention of recurrence after excision of presternal keloids. Dermatol Basel Switz. 2007;215(1):63–5.

    Article  CAS  Google Scholar 

  207. Cação FM, Tanaka V, Messina MC de L. Failure of imiquimod 5 % cream to prevent recurrence of surgically excised trunk keloids. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2009;35(4):629–33.

  208. Chuangsuwanich A, Gunjittisomram S. The efficacy of 5 % imiquimod cream in the prevention of recurrence of excised keloids. J Med Assoc Thail Chotmaihet Thangphaet. 2007;90(7):1363–7.

    Google Scholar 

  209. Prado A, Andrades P, Benitez S, Umaña M. Scar management after breast surgery: preliminary results of a prospective, randomized, and double-blind clinical study with aldara cream 5 % (imiquimod). Plast Reconstr Surg. 2005;115(3):966–72.

    Article  CAS  PubMed  Google Scholar 

  210. Berman B, Villa A. Imiquimod 5% cream for keloid management. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2003;29(10):1050–1.

    Google Scholar 

  211. Aggarwal H, Saxena A, Lubana PS, Mathur RK, Jain DK. Treatment of keloids and hypertrophic scars using bleom. J Cosmet Dermatol. 2008;7(1):43–9.

    Article  PubMed  Google Scholar 

  212. Templeton SF, Solomon AR, Swerlick RA. Intradermal bleomycin injections into normal human skin. A histopathologic and immunopathologic study. Arch Dermatol. 1994;130(5):577–83.

    Article  CAS  PubMed  Google Scholar 

  213. Bodokh I, Brun P. Treatment of keloid with intralesional bleomycin. Ann Dermatol Vénéréol. 1996;123(12):791–4.

    CAS  PubMed  Google Scholar 

  214. Payapvipapong K, Niumpradit N, Piriyanand C, Buranaphalin S, Nakakes A. The treatment of keloids and hypertrophic scars with intralesional bleomycin in skin of color. J Cosmet Dermatol. 2015;14(1):83–90.

    Article  PubMed  Google Scholar 

  215. Naeini FF, Najafian J, Ahmadpour K. Bleomycin tattooing as a promising therapeutic modality in large keloids and hypertrophic scars. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2006;32(8):1023–9 (discussion 1029–30).

    CAS  Google Scholar 

  216. Saray Y, Güleç AT. Treatment of keloids and hypertrophic scars with dermojet injections of bleomycin: a preliminary study. Int J Dermatol. 2005;44(9):777–84.

    Article  PubMed  Google Scholar 

  217. Manca G, Pandolfi P, Gregorelli C, Cadossi M, de Terlizzi F. Treatment of keloids and hypertrophic scars with bleomycin and electroporation. Plast Reconstr Surg. 2013;132(4):621e–30e.

    Article  CAS  PubMed  Google Scholar 

  218. Camacho-Martínez FM, Rey ER, Serrano FC, Wagner A. Results of a combination of bleomycin and triamcinolone acetonide in the treatment of keloids and hypertrophic scars. An Bras Dermatol. 2013;88(3):387–94.

    Article  PubMed  PubMed Central  Google Scholar 

  219. España A, Solano T, Quintanilla E. Bleomycin in the treatment of keloids and hypertrophic scars by multiple needle punctures. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2001;27(1):23–7.

    Google Scholar 

  220. Leventhal D, Furr M, Reiter D. Treatment of keloids and hypertrophic scars: a meta-analysis and review of the literature. Arch Facial Plast Surg. 2006;8(6):362–8.

    Article  PubMed  Google Scholar 

  221. Perdanasari AT, Lazzeri D, Su W, Xi W, Zheng Z, Ke L, et al. Recent developments in the use of intralesional injections keloid treatment. Arch Plast Surg. 2014;41(6):620–9.

    Article  Google Scholar 

  222. Kloeters O, Tandara A, Mustoe TA. Hypertrophic scar model in the rabbit ear: a reproducible model for studying scar tissue behavior with new observations on silicone gel sheeting for scar reduction. Wound Repair Regen Off Publ Wound Heal Soc Eur Tissue Repair Soc. 2007;15(Suppl 1):S40–5.

    Google Scholar 

  223. Slemp AE, Kirschner RE. Keloids and scars: a review of keloids and scars, their pathogenesis, risk factors, and management. Curr Opin Pediatr. 2006;18(4):396–402.

    Article  PubMed  Google Scholar 

  224. Mutalik S. Treatment of keloids and hypertrophic scars. Indian J Dermatol Venereol Leprol. 2005;71(1):3–8.

    Article  PubMed  Google Scholar 

  225. Due E, Rossen K, Sorensen LT, Kliem A, Karlsmark T, Haedersdal M. Effect of UV irradiation on cutaneous cicatrices: a randomized, controlled trial with clinical, skin reflectance, histological, immunohistochemical and biochemical evaluations. Acta Derm Venereol. 2007;87(1):27–32.

    Article  CAS  PubMed  Google Scholar 

  226. Allen JP. N.Y. MM of A New Y. The art of medicine in ancient Egypt. Metropolitan Museum of Art; 2005. p. 117.

  227. Edwin Smith Papyrus [Internet]. http://archive.nlm.nih.gov/proj/ttp/flash/smith/smith.html. Accessed 31 May 2015.

  228. Gisquet H, Liu H, Blondel WCPM, Leroux A, Latarche C, Merlin JL, et al. Intradermal tacrolimus prevent scar hypertrophy in a rabbit ear model: a clinical, histological and spectroscopical analysis. Skin Res Technol Off J Int Soc Bioeng Skin ISBS Int Soc Digit Imaging Skin ISDIS Int Soc Skin Imaging ISSI. 2011;17(2):160–6.

    Google Scholar 

  229. Lu L, Saulis AS, Liu WR, Roy NK, Chao JD, Ledbetter S, et al. The temporal effects of anti-TGF-beta1, 2, and 3 monoclonal antibody on wound healing and hypertrophic scar formation. J Am Coll Surg. 2005;201(3):391–7.

    Article  PubMed  Google Scholar 

  230. Zhang G-Y, Yi C-G, Li X, Zheng Y, Niu Z-G, Xia W, et al. Inhibition of vascular endothelial growth factor expression in keloid fibroblasts by vector-mediated vascular endothelial growth factor shRNA: a therapeutic potential strategy for keloid. Arch Dermatol Res. 2008;300(4):177–84.

    Article  CAS  PubMed  Google Scholar 

  231. Babalola O, Mamalis A, Lev-Tov H, Jagdeo J. The Role of MicroRNAs in Skin Fibrosis. Arch Dermatol Res. 2013;305(9):763–76.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  232. RXI-109-1202 Effect of RXI-109 on CTGF mRNA Levels—getFile.aspx [Internet]. [cited 2015 Sep 21]. https://www.aad.org/eposters/Submissions/getFile.aspx?id=1400&type=sub. Accessed 21 Sep 2015.

  233. Nanda S, Reddy BSN. Intralesional 5-fluorouracil as a treatment modality of keloids. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2004;30(1):54–6 (discussion 56–7).

    Google Scholar 

  234. Sadeghinia A, Sadeghinia S. Comparison of the efficacy of intralesional triamcinolone acetonide and 5-fluorouracil tattooing for the treatment of keloids. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2012;38(1):104–9.

    CAS  Google Scholar 

  235. Hatamipour E, Mehrabi S, Hatamipour M, Ghafarian Shirazi HR. Effects of combined intralesional 5-Fluorouracil and topical silicone in prevention of keloids: a double blind randomized clinical trial study. Acta Med. Iran. 2011;49(3):127–30.

    Google Scholar 

  236. Meymandi SS, Rezazadeh A, Ekhlasi A. Studying intense pulsed light method along with corticosteroid injection in treating keloid scars. Iran Red Crescent Med J. 2014;16(2):e12464.

    Google Scholar 

  237. Stephanides S, Rai S, August P, Ferguson J, Madan V. Treatment of refractory keloids with pulsed dye laser alone and with rotational pulsed dye laser and intralesional corticosteroids: a retrospective case series. Laser Ther. 2011;20(4):279–86.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  238. Akaishi S, Koike S, Dohi T, Kobe K, Hyakusoku H, Ogawa R. Nd:YAG laser treatment of keloids and hypertrophic scars. Eplasty. 2012;12:e1.

    PubMed  PubMed Central  Google Scholar 

  239. Son IP, Park KY, Kim B, Kim MN. Pilot study of the efficacy of 578 nm copper bromide laser combined with intralesional corticosteroid injection for treatment of keloids and hypertrophic scars. Ann Dermatol. 2014;26(2):156–61.

    Article  PubMed  PubMed Central  Google Scholar 

  240. Weshay AH, Hay RMA, Sayed K, El Hawary MS, Nour-Edin F. Combination of radiofrequency and intralesional steroids in the treatment of keloids: a pilot study. Dermatol Surg. 2015;41(6):731–5.

    Article  CAS  PubMed  Google Scholar 

  241. Emad M, Omidvari S, Dastgheib L, Mortazavi A, Ghaem H. Surgical excision and immediate postoperative radiotherapy versus cryotherapy and intralesional steroids in the management of keloids: a prospective clinical trial. Med Princ Pract Int J Kuwait Univ Health Sci Cent. 2010;19(5):402–5.

    Google Scholar 

  242. Chan KY, Lau CL, Adeeb SM, Somasundaram S, Nasir-Zahari M. A randomized, placebo-controlled, double-blind, prospective clinical trial of silicone gel in prevention of hypertrophic scar development in median sternotomy wound. Plast Reconstr Surg. 2005;116(4):1013–20 (discussion 1021–2).

    Article  CAS  PubMed  Google Scholar 

  243. Chernoff WG, Cramer H, Su-Huang S. The efficacy of topical silicone gel elastomers in the treatment of hypertrophic scars, keloid scars, and post-laser exfoliation erythema. Aesthetic Plast Surg. 2007;31(5):495–500.

    Article  PubMed  Google Scholar 

  244. Al-Khawajah MM. Failure of interferon-alpha 2b in the treatment of mature keloids. Int J Dermatol. 1996;35(7):515–7.

    Article  CAS  PubMed  Google Scholar 

  245. Berman B, Flores F. Recurrence rates of excised keloids treated with postoperative triamcinolone acetonide injections or interferon alfa-2b injections. J Am Acad Dermatol. 1997;37(5 Pt 1):755–7.

    Article  CAS  PubMed  Google Scholar 

  246. Conejo-Mir JS, Corbi R, Linares M. Carbon dioxide laser ablation associated with interferon alfa-2b injections reduces the recurrence of keloids. J Am Acad Dermatol. 1998;39(6):1039–40.

    Article  CAS  PubMed  Google Scholar 

  247. Davison SP, Mess S, Kauffman LC, Al-Attar A. Ineffective treatment of keloids with interferon alpha-2b. Plast Reconstr Surg. 2006;117(1):247–52.

    Article  CAS  PubMed  Google Scholar 

  248. Ghahary A, Shen YJ, Nedelec B, Scott PG, Tredget EE. Interferons gamma and alpha-2b differentially regulate the expression of collagenase and tissue inhibitor of metalloproteinase-1 messenger RNA in human hypertrophic and normal dermal fibroblasts. Wound Repair Regen Off Publ Wound Heal Soc Eur Tissue Repair Soc. 1995;3(2):176–84.

    CAS  Google Scholar 

  249. Lee JH, Kim SE, Lee A-Y. Effects of interferon-alpha2b on keloid treatment with triamcinolone acetonide intralesional injection. Int J Dermatol. 2008;47(2):183–6.

    Article  CAS  PubMed  Google Scholar 

  250. Lee JP, Jalili RB, Tredget EE, Demare JR, Ghahary A. Antifibrogenic effects of liposome-encapsulated IFN-alpha2b cream on skin wounds in a fibrotic rabbit ear model. J Interferon Cytokine Res Off J Int Soc Interferon Cytokine Res. 2005;25(10):627–31.

    Article  CAS  Google Scholar 

  251. Wong TW, Chiu HC, Yip KM. Intralesional interferon alpha-2b has no effect in the treatment of keloids. Br J Dermatol. 1994;130(5):683–5.

    Article  CAS  PubMed  Google Scholar 

  252. Bailey JNR, Waite AE, Clayton WJ, Rustin MHA. Application of topical mitomycin C to the base of shave-removed keloid scars to prevent their recurrence. Br J Dermatol. 2007;156(4):682–6.

    Article  CAS  PubMed  Google Scholar 

  253. Sanders KW, Gage-White L, Stucker FJ. Topical mitomycin C in the prevention of keloid scar recurrence. Arch Facial Plast Surg. 2005;7(3):172–5.

    Article  PubMed  Google Scholar 

  254. Simman R, Alani H, Williams F. Effect of mitomycin C on keloid fibroblasts: an in vitro study. Ann Plast Surg. 2003;50(1):71–6.

    Article  PubMed  Google Scholar 

  255. Stewart CE, Kim JY. Application of mitomycin-C for head and neck keloids. Otolaryngol-Head Neck Surg Off J Am Acad Otolaryngol-Head Neck Surg. 2006;135(6):946–50.

    Article  Google Scholar 

  256. Talmi YP, Orenstein A, Wolf M, Kronenberg J. Use of mitomycin C for treatment of keloid: a preliminary report. Otolaryngol-Head Neck Surg Off J Am Acad Otolaryngol-Head Neck Surg. 2005;132(4):598–601.

    Article  Google Scholar 

  257. Augusti KT. Therapeutic values of onion (Allium cepa L.) and garlic (Allium sativum L.). Indian J Exp Biol. 1996;34(7):634–40.

    CAS  PubMed  Google Scholar 

  258. Chung VQ, Kelley L, Marra D, Jiang SB. Onion extract gel versus petrolatum emollient on new surgical scars: prospective double-blinded study. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2006;32(2):193–7.

    CAS  Google Scholar 

  259. Hosnuter M, Payasli C, Isikdemir A, Tekerekoglu B. The effects of onion extract on hypertrophic and keloid scars. J Wound Care. 2007;16(6):251–4.

    Article  CAS  PubMed  Google Scholar 

  260. Jackson BA, Shelton AJ. Pilot study evaluating topical onion extract as treatment for postsurgical scars. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 1999;25(4):267–9.

    CAS  Google Scholar 

  261. Koc E, Arca E, Surucu B, Kurumlu Z. An open, randomized, controlled, comparative study of the combined effect of intralesional triamcinolone acetonide and onion extract gel and intralesional triamcinolone acetonide alone in the treatment of hypertrophic scars and keloids. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 2008;34(11):1507–14.

    CAS  Google Scholar 

  262. Biemans RG. A rare case of sarcomatous degeneration of a cheloid. Arch Chir Neerl. 1963;15:175–85.

    Article  CAS  PubMed  Google Scholar 

  263. Bischof M, Krempien R, Debus J, Treiber M. Postoperative electron beam radiotherapy for keloids: objective findings and patient satisfaction in self-assessment. Int J Dermatol. 2007;46(9):971–5.

    Article  PubMed  Google Scholar 

  264. Borok TL, Bray M, Sinclair I, Plafker J, LaBirth L, Rollins C. Role of ionizing irradiation for 393 keloids. Int J Radiat Oncol Biol Phys. 1988;15(4):865–70.

    Article  CAS  PubMed  Google Scholar 

  265. Botwood N, Lewanski C, Lowdell C. The risks of treating keloids with radiotherapy. Br J Radiol. 1999;72(864):1222–4.

    Article  CAS  PubMed  Google Scholar 

  266. Clavere P, Bedane C, Bonnetblanc JM, Bonnafoux-Clavere A, Rousseau J. Postoperative interstitial radiotherapy of keloids by iridium 192: a retrospective study of 46 treated scars. Dermatol Basel Switz. 1997;195(4):349–52.

    Article  CAS  Google Scholar 

  267. Hintz BL. Radiotherapy for keloid treatment. J Natl Med Assoc. 1973;65(1):71–5.

    CAS  PubMed  PubMed Central  Google Scholar 

  268. Kal HB, Veen RE. Biologically effective doses of postoperative radiotherapy in the prevention of keloids. Dose-effect relationship. Strahlenther Onkol Organ Dtsch Röntgenges Al. 2005;181(11):717–23.

    Article  Google Scholar 

  269. Kal HB, Veen RE, Jürgenliemk-Schulz IM. Dose-effect relationships for recurrence of keloid and pterygium after surgery and radiotherapy. Int J Radiat Oncol Biol Phys. 2009;74(1):245–51.

    Article  PubMed  Google Scholar 

  270. Kovalic JJ, Perez CA. Radiation therapy following keloidectomy: a 20-year experience. Int J Radiat Oncol Biol Phys. 1989;17(1):77–80.

    Article  CAS  PubMed  Google Scholar 

  271. Levitt W, Gillies H. Radiotherapy in the prophylaxis and treatment of keloid. The Lancet. 1942;239(6189):440–2.

    Article  Google Scholar 

  272. Malaker A, Ellis F, Paine CH. Keloid scars: a new method of treatment combining surgery with interstitial radiotherapy. Clin Radiol. 1976;27(2):179–83.

    Article  CAS  PubMed  Google Scholar 

  273. Malaker K, Vijayraghavan K, Hodson I, Al Yafi T. Retrospective analysis of treatment of unresectable keloids with primary radiation over 25 years. Clin Oncol R Coll Radiol G B. 2004;16(4):290–8.

    Article  CAS  Google Scholar 

  274. Ogawa R, Yoshitatsu S, Yoshida K, Miyashita T. Is radiation therapy for keloids acceptable? The risk of radiation-induced carcinogenesis. Plast Reconstr Surg. 2009;124(4):1196–201.

    Article  CAS  PubMed  Google Scholar 

  275. Ragoowansi R, Cornes PGS, Moss AL, Glees JP. Treatment of keloids by surgical excision and immediate postoperative single-fraction radiotherapy. Plast Reconstr Surg. 2003;111(6):1853–9.

    Article  PubMed  Google Scholar 

  276. Sclafani AP, Gordon L, Chadha M, Romo T. Prevention of earlobe keloid recurrence with postoperative corticosteroid injections versus radiation therapy: a randomized, prospective study and review of the literature. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 1996;22(6):569–74.

    CAS  Google Scholar 

  277. Speranza G, Sultanem K, Muanza T. Descriptive study of patients receiving excision and radiotherapy for keloids. Int J Radiat Oncol Biol Phys. 2008;71(5):1465–9.

    Article  PubMed  Google Scholar 

  278. Subedi N, Roberts F. Radiotherapy treatment of keloid scars and other benign conditions: is there a need for a database of patients treated? Br J Dermatol. 2009;161(1):194–5.

    Article  CAS  PubMed  Google Scholar 

  279. Veen RE, Kal HB. Postoperative high-dose-rate brachytherapy in the prevention of keloids. Int J Radiat Oncol Biol Phys. 2007;69(4):1205–8.

    Article  PubMed  Google Scholar 

  280. Viani GA, Stefano EJ, Afonso SL, De Fendi LI. Postoperative strontium-90 brachytherapy in the prevention of keloids: results and prognostic factors. Int J Radiat Oncol Biol Phys. 2009;73(5):1510–6.

    Article  PubMed  Google Scholar 

  281. Palmieri B, Gozzi G, Palmieri G. Vitamin E added silicone gel sheets for treatment of hypertrophic scars and keloids. Int J Dermatol. 1995;34(7):506–9.

    Article  CAS  PubMed  Google Scholar 

  282. Jenkins M, Alexander JW, MacMillan BG, Waymack JP, Kopcha R. Failure of topical steroids and vitamin E to reduce postoperative scar formation following reconstructive surgery. J Burn Care Rehabil. 1986;7(4):309–12.

    Article  CAS  PubMed  Google Scholar 

  283. Baumann LS, Spencer J. The effects of topical vitamin E on the cosmetic appearance of scars. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 1999;25(4):311–5.

    CAS  Google Scholar 

  284. Ehrlich HP, Tarver H, Hunt TK. Inhibitory effects of vitamin E on collagen synthesis and wound repair. Ann Surg. 1972;175(2):235–40.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  285. Havlik RJ. Vitamin E and wound healing. Plastic Surgery Educational Foundation DATA Committee. Plast Reconstr Surg. 1997;100(7):1901–2.

    Article  CAS  PubMed  Google Scholar 

  286. Khoosal D, Goldman RD. Vitamin E for treating children’s scars. Does it help reduce scarring? Can Fam Physician Médecin Fam Can. 2006;52:855–6.

    Google Scholar 

  287. Martin A. The use of antioxidants in healing. Dermatol Surg Off Publ Am Soc Dermatol Surg Al. 1996;22(2):156–60.

    CAS  Google Scholar 

  288. Zurada JM, Kriegel D, Davis IC. Topical treatments for hypertrophic scars. J Am Acad Dermatol. 2006;55(6):1024–31.

    Article  PubMed  Google Scholar 

  289. Lawrence WT. Treatment of earlobe keloids with surgery plus adjuvant intralesional verapamil and pressure earrings. Ann Plast Surg. 1996;37(2):167–9.

    Article  CAS  PubMed  Google Scholar 

  290. Xu S, Teng J, Xie J, Shen M, Chen D. Comparison of the mechanisms of intralesional steroid, interferon or verapamil injection in the treatment of proliferative scars. Zhonghua Zheng Xing Wai Ke Za Zhi Zhonghua Zhengxing Waike Zazhi Chin J Plast Surg. 2009;25(1):37–40.

    Google Scholar 

  291. D’Andrea F, Brongo S, Ferraro G, Baroni A. Prevention and treatment of keloids with intralesional verapamil. Dermatol Basel Switz. 2002;204(1):60–2.

    Article  Google Scholar 

  292. Doong H, Dissanayake S, Gowrishankar TR, LaBarbera MC, Lee RC. The 1996 Lindberg Award. Calcium antagonists alter cell shape and induce procollagenase synthesis in keloid and normal human dermal fibroblasts. J Burn Care Rehabil. 1996;17(6 Pt 1):497–514.

    Article  CAS  PubMed  Google Scholar 

  293. Lee RC, Ping JA. Calcium antagonists retard extracellular matrix production in connective tissue equivalent. J Surg Res. 1990;49(5):463–6.

    Article  CAS  PubMed  Google Scholar 

  294. Hultén L. Dressings for surgical wounds. Am J Surg. 1994;167(1A):42S–4S (discussion 44S–45S).

    Article  PubMed  Google Scholar 

  295. Vogt PM, Andree C, Breuing K, Liu PY, Slama J, Helo G, et al. Dry, moist, and wet skin wound repair. Ann Plast Surg. 1995;34(5):493–9 (discussion 499–500).

    Article  CAS  PubMed  Google Scholar 

  296. Hutchinson JJ. Infection under occlusion. Ostomy Wound Manage. 1994;40(3):28–30 (32–3).

    CAS  PubMed  Google Scholar 

  297. Thomas DW, Hill CM, Lewis MA, Stephens P, Walker R, Von Der Weth A. Randomized clinical trial of the effect of semi-occlusive dressings on the microflora and clinical outcome of acute facial wounds. Wound Repair Regen Off Publ Wound Heal Soc Eur Tissue Repair Soc. 2000;8(4):258–63.

    CAS  Google Scholar 

  298. Klopp R, Niemer W, Fraenkel M, von der Weth A. Effect of four treatment variants on the functional and cosmetic state of mature scars. J Wound Care. 2000;9(7):319–24.

    Article  CAS  PubMed  Google Scholar 

  299. Schmidt A, Gassmueller J, Hughes-Formella B, Bielfeldt S. Treating hypertrophic scars for 12 or 24 hours with a self-adhesive hydroactive polyurethane dressing. J Wound Care. 2001;10(5):149–53.

    Article  CAS  PubMed  Google Scholar 

  300. Wigger-Albert W, Kuhlmann M, Wilhelm D, Mrowietz U, Eichhorn K, Ortega J, et al. Efficacy of a polyurethane dressing versus a soft silicone sheet on hypertrophic scars. J Wound Care. 2009;18(5):208 (210–4).

    Article  CAS  PubMed  Google Scholar 

  301. Gauglitz GG, Pavicic T. Emerging strategies for the prevention and therapy of excessive scars. MMW Fortschr Med. 2012;154(15):55–8.

    Article  PubMed  Google Scholar 

  302. Wang L, Tai N-Z, Fan Z-H. Effect of botulinum toxin type A injection on hypertrophic scar in rabbit ear model. Zhonghua Zheng Xing Wai Ke Za Zhi Zhonghua Zhengxing Waike Zazhi Chin J Plast Surg. 2009;25(4):284–7.

    CAS  Google Scholar 

  303. Xiao Z, Qu G. Effects of botulinum toxin type a on collagen deposition in hypertrophic scars. Mol Basel Switz. 2012;17(2):2169–77.

    CAS  Google Scholar 

  304. Yang G-L, Zhao M, Wang J-M, He C-F, Luo Y, Liu H-Y, et al. Short-term clinical effects of photodynamic therapy with topical 5-aminolevulinic acid for facial acne conglobata: an open, prospective, parallel-arm trial. Photodermatol Photoimmunol Photomed. 2013;29(5):233–8.

    Article  CAS  PubMed  Google Scholar 

  305. Ud-Din S, Thomas G, Morris J, Bayat A. Photodynamic therapy: an innovative approach to the treatment of keloid disease evaluated using subjective and objective non-invasive tools. Arch Dermatol Res. 2013;305(3):205–14.

    Article  CAS  PubMed  Google Scholar 

  306. Nie Z. Is photodynamic therapy a solution for keloid? G Ital Dermatol E Venereol Organo Uff Soc Ital Dermatol E Sifilogr. 2011;146(6):463–72.

    CAS  Google Scholar 

  307. Nie Z, Bayat A, Behzad F, Rhodes LE. Positive response of a recurrent keloid scar to topical methyl aminolevulinate-photodynamic therapy. Photodermatol Photoimmunol Photomed. 2010;26(6):330–2.

    Article  PubMed  Google Scholar 

  308. Sebastian A, Allan E, Allan D, Colthurst J, Bayat A. Addition of novel degenerate electrical waveform stimulation with photodynamic therapy significantly enhances its cytotoxic effect in keloid fibroblasts: first report of a potential combination therapy. J Dermatol Sci. 2011;64(3):174–84.

    Article  CAS  PubMed  Google Scholar 

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Acknowledgments

The authors would like to thank Antoinette F. Hood, MD, for the histopathology slides and Donald Glass, MD, for the clinical pictures of keloids. The authors would also like to acknowledge Meena Katdare, PhD, for her guidance throughout the writing process.

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Correspondence to Valerie M. Harvey.

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Anthony Paul Trace, Clinton Enos, Alon Mantel, and Valerie Harvey report no conflicts of interest.

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A. P. Trace and C. W. Enos contributed equally in the generation of this manuscript.

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Trace, A.P., Enos, C.W., Mantel, A. et al. Keloids and Hypertrophic Scars: A Spectrum of Clinical Challenges. Am J Clin Dermatol 17, 201–223 (2016). https://doi.org/10.1007/s40257-016-0175-7

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