Abstract
Invasive carcinomas in polyps removed during endoscopy are described. Most of them can be treated adequately by polypectomy alone, but some need additional surgical treatment. Incomplete excision, poorly-differentiated carcinoma, and lymphatic invasion are associated with increased risk of residual carcinoma and lymph node metastases, making colorectal resection more attractive; however, in elderly patients and poor-risk patients, the risks of surgery should be balanced against the possible advantage of curative surgery. Rectal polyps may be large but sphincter preservation can usually be achieved by different types of local excision. Recently described flat adenomas may contain carcinoma, but may also be treated by polypectomy using snare or hot biopsy.
Résumé
On décrit le cancer invasif dans les polypes enlevés par endoscopie. La plupart d'entre eux sont bien traités par la polypectomie seule mais certains ont besoin ensuite d'un traitement chirurgical. Une excision incomplète, un carcinome peu différencié, et une invasion lymphatique sont facteurs de risque de cancer résiduel et de métastases lymphatiques, rendant plus logique la résection intestinale correspondante. Toutefois, chez les patients âgés et à haut risque, on doit peser les dangers et avantages éventuels d'une chirurgie curative. MÊme si les polypes rectaux sont gros, la conservation du sphincter s'effectue en général grâce à différents types d'excisisons locales. Les adénomes plats décrits récemment peuvent Être cancéreux mais peuvent aussi Être traités par la polypectomie à l'anse diathermique ou par la biopsie chirurgicale.
Resumen
Se describen los carcinomas presentes en pólipos resecados por endoscopia. La mayoría de éstos puede ser tratada en forma adecuada mediante polipectomía solamente, pero algunos requieren terapia adicional. La resección incompleta, el carcinoma pobremente diferenciado, y la invasión linfática aparecen asociados con mayor riesgo de carcinoma residual y de metástasis ganglionares, lo cual hace más atractiva la resección colorrectal. Sin embargo, en los ancianos y en pacientes de alto riesgo quirÚrgico, el riesgo de la operación debe ser balanceado contra la posible ventaja de la cirugía realizada con propósito curativo. Los pólipos rectales pueden ser de gran tamaño, pero generalmente se puede lograr la preservación esfinteriana mediante diferentes tipos de resección local. Los recientemente descritos adenomas planos pueden contener carcinoma, pero éstos también son susceptibles de tratamiento por polipectomía mediante el asa de electrocauterio o la biopsia caliente.
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References
Morson, B.C., Dawson, I.M.: Gastrointestinal Pathology, Oxford, Blackwell, 1979, pp. 163–174
Fenoglio, C.M., Kaye, G.I., Lane, N.: Distribution of human colonic lymphatics in normal, hyperplastic and adenomatous tissue. Gastroenterology64:51, 1973
Ehrinpreis, M.N., Kinzie, J.L., Jaszewski, R., Peleman, R.L.: Management of the malignant polyp. Gastoenterol. Clin. North Am.17:837, 1988
Sugihara, K., Muto, T., Morioka, Y.: Management of patients with invasive carcinoma removed by colonoscopic polypectomy. Dis. Colon Rectum32:829, 1989
Furuswa, M.: Prognosis of patients with colon cancer limited to submucosal layer, who had undergone endoscopic polypectomy. Stomach and Intestine20:1087, 1985 (in Japanese with English abstract)
Wolff, W.I., Shinya, H.: Definitive treatment of “malignant” polyps of the colon. Ann. Surg.182:516, 1975
Coutsoftides, T., Sivak, Jr., M.V., Benjamin, S.P., Jagelman, D.: Colonoscopy and the management of polyps containing invasive carcinoma. Ann. Surg.188:638, 1978
Nivatvongs, S., Goldberg, S.M.: Management of patients who have polyps containing invasive carcinoma removed via colonoscope. Dis. Colon Rectum21:8, 1978
Colacchio, T.A., Forde, K.A., Scantlebury, V.P.: Endoscopic polypectomy: Inadequate treatment for invasive colorectal carcinoma. Am. Surgeon194:704, 1981
Langer, J.C., Cohen, Z., Taylor, B.R., Stafford, S., Jeejeebhoy, K.N., Cullen, J.B.: Management of patients with polyps containing malignancy removed by colonoscopic polypectomy. Dis. Colon Rectum27:6, 1984
Cooper, H.S.: Surgical pathology of endoscopically removed malignant polyps of the colon and rectum. Am. J. Surg. Path.7:613, 1983
Webb, W.A., McDaniel, L., Jones, L.: Experience with 1000 colonoscopic polypectomies. Ann. Surg.201:626, 1985
Christie, J.P.: Malignant colon polyps—Cure by colonoscopy or colectomy? Am. J. Gastroenterol.79:543, 1984
Morson, B.C., Whiteway, J.E., Jones, E.A., Macrae, F.A., Williams, B.C.: Histopathology and prognosis of malignant colorectal polyps treated by endoscopic polypectomy. Gut25:437, 1984
Bartnik, W., Burtruk, E., Orlowska, J.: A conservative approach to adenomas containing invasive carcinoma removed colonoscopically. Dis. Colon Rectum28:673, 1985
Cranley, J.P., Petras, R.E., Carey, W.D., Paradis, K., Sivak, K.V.: When is endoscopic polypectomy adequate therapy for colonic polyps containing invasive carcinoma? Gastroenterology91:419, 1986
Richards, W.O., Webb, W.A., Morris, S.J., Davis, R.C., McDaniel, L., Jones, L., Littauer, S.: Patient management after endoscopic removal of the cancerous colon adenoma. Ann. Surg.205:665, 1987
Rossini, F.P., Ferrari, A., Coverlizza, S., Spandre, M., Risio, M., Gemme, C., Cavallero, M.: Large bowel adenomas containing carcinoma—A diagnostic and therapeutic approach. Int. J. Colorect. Dis.3:47, 1988
Williams, B.C., Whiteway, J.E., Jass, J.R.: Practical aspects of endoscopic management of malignant polyp. Endoscopy19:31, 1987
Wilcox, G.M., Anderson, P.B., Colacchio, T.A.: Early invasive carcinoma in colonic polyps. Cancer57:160, 1986
Fried, G.M., Hreno, A., Duguid, W.P., Hampson, L.G.: Rational management of malignant colon polyps based on long-term follow-up. Surgery96:815, 1984
Eckhardt, V.F., Fuchs, M., Kansler, G., Remmele, W., Stienen, U.: Follow-up of patients with colonic polyps containing severe atypia and invasive carcinoma. Cancer61:2552, 1988
Christie, J.P.: Polypectomy or colectomy? Management of 106 consecutive encountered colorectal polyps. Am. Surg.54:93, 1988
Haggitt, R.C., Glotzbach, R.E., Soffer, E.E., Wruble, L.D.: Prognostic factors in colorectal carcinomas arising in adenomas: Implications for lesions removed by endoscopic polypectomy. Gastroenterology89:328, 1985
Fucini, C., Wolff, B.G., Spencer, R.J.: An appraisal of endoscopic removal of malignant colonic polyps. Mayo Clin. Proc.61:123, 1986
Muto, T., Kamiya, J., Sawada, T., Morioka, Y.: Morphogenesis of human colonic cancer. Dis. Colon Rectum26:257, 1983
Shatney, C.H., Lober, P.H., Gilbertsen, V.A., Sosin, H.: The treatment of pedunculated adenomatous colorectal polyps with focal cancer. Surg. Gynecol. Obstet.139:845, 1974
Kodaira, S., Ono, S., Purri, P., Takizawa, K., Kotake, K., Tsuyuki, A., Okuda, M., Abe, O.: Endoscopic polypecomy of the large bowel: Management of cancer-bearing polyps. Int. Surg.66:311, 1981
Stamm, B., Ristivojevic, B.: Small pedunculated tubular adenoma of the colon with carcinoma restricted to the head, invasion of lymphatics and widespread metastases. Case report and review of the literature. Virchows Arch.402:83, 1983
Gemsenjager, E.: Transverse pelvic floor division for the posterior approach to the rectum and anus. Int. J. Colorect. Dis.4:67, 1989
Muto, T., Kamiya, J., Sawada, T., Konishi, F., Sugihara, K., Kubota, Y., Adachi, M., Agawa, S., Saito, Y., Morioka, Y., Tanprayoon, T.: Small “flat adenoma” of the large bowel with special reference to its clinicopathological features. Dis. Colon Rectum28:847, 1985
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Muto, T., Sawada, T. & Sugihara, K. Treatment of carcinoma in adenomas. World J. Surg. 15, 35–40 (1991). https://doi.org/10.1007/BF01658958
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DOI: https://doi.org/10.1007/BF01658958