Abstract
Intra-articular masses are not a rare finding in routine imaging. This is particularly true in patients with underlying joint diseases such as degenerative arthritis. Nevertheless, concomitant presentation is rather uncommon in imaging studies. The authors report an unusual concomitant lipoma arborescens and synovial osteochondromatosis (which has not previously been reported in the literature to the best of the authors’ knowledge) in a man in his 60 s with a long-standing history of knee osteoarthritis. In this case presentation, we review the differential diagnosis for noninfectious synovial proliferative disorders presenting as intra-articular masses, their potential association with underlying joint pathology, and discuss the key imaging features and appropriate treatment.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Change history
25 April 2022
A Correction to this paper has been published: https://doi.org/10.1007/s00256-022-04063-z
References
Sheldon JP, Forrester DM, Learch TJ. Imaging of intra-articular masses. Radiographics. 2005;25:105–19. https://doi.org/10.1148/rg.251045050.
Narváez J, Narváez JA, Ortega R, Juan-Mas A, Roig-Escofet D. Lipoma arborescens of the knee. Rev Rhum Engl Ed. 1999;66:351–3.
Murphey MD, Vidal JA, Fanburg-Smith JC, Gajewski DA. Imaging of synovial chondromatosis with radiologic-pathologic correlation. Radiographics. 2007;27:1465–88. https://doi.org/10.1148/rg.275075116.
Sanamandra SK, Ong KO. Lipoma arborescens. Singapore Med J. 2014;55:5–11. https://doi.org/10.11622/smedj.2014003.
Minami S, Miyake Y, Kinoshita H. SICOT J. 2016;2:28. https://doi.org/10.1051/sicotj/2016019.
Vilanova JC, Barceló J, Villalón M, Aldomà J, Delgado E, Zapater I. MR imaging of lipoma arborescens and the associated lesions. Skeletal Radiol. 2003;32:504–9. https://doi.org/10.1007/s00256-003-0654-9/.
Howe BM, Wenger DE. Lipoma arborescens: comparison of typical and atypical disease presentations. Clin Radiol. 2013;68:1220–6. https://doi.org/10.1016/j.crad.2013.07.002.
McKenzie G, Raby N, Ritchie D. A pictorial review of primary synovial osteochondromatosis. Eur Radiol. 2008;18:2662–9. https://doi.org/10.1007/s00330-008-1024-8.
Resnick D. Tumors and tumor-like lesions of soft tissues. In: Diagnosis of bone and joint disorders. 4th ed. Philadelphia, Pa: Saunders, 2002;4204–4273.
Unni KK, Inwards CY, Bridge JA, Kindblom LG, Wold LE. Synovial tumors. In: Tumors of the bone and joints. 4th ed. Silver Spring, Md: ARP Press, 2005;386–432.
Weiss SW, Goldblum JR. Cartilaginous soft tissue tumors. In: Enzinger and Weiss’s soft tissue tumors. 4th ed. Philadelphia, Pa: Mosby, 2001;1368–1388.
Villacin AB, Brigham LN, Bullough PG. Primary and secondary synovial chondrometaplasia: histopathologic and clinicoradiologic differences. Hum Pathol. 1979;10:439–51.
Habusta SF Tuck JA. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing;2022 Jan. 2021 Dec 28. PMID:29262110. Bookshelf ID: NBK470463.
Murphey MD, Rhee JH, Lewis RB, Fanburg-Smith JC, Flemming DJ, Walker EA. Pigmented villonodular synovitis: radiologic-pathologic correlation. Radiographics. 2008;28:1493–518. https://doi.org/10.1148/rg.285085134.
Garner HW, Ortiguera CJ, Nakhleh RE. Pigmented villonodular synovitis. Radiographics. 2008;28:1519–23.
Author information
Authors and Affiliations
Contributions
All authors made substantial contributions to all four categories established by the International Committee of Medical Journal Editors (http://www.icmje.org) including (1) conception and design, acquisition of data, or analysis and interpretation of data, (2) drafting the article or revising it critically for important intellectual content, (3) final approval of the version to be published, and (4) agree to be accountable for all aspects of the work if questions arise related to its accuracy or integrity. More specifically, ST, LD, DM, and AG prepared all radiological images and legends. QH prepared macroscopic and histological specimen images and legends, and description of histopathological findings in the case report manuscript. Ali Guermazi, as the corresponding author, hereby verifies each author’s contribution.
Corresponding author
Ethics declarations
Informed Consent
The privacy officer at our institution was presented with the de-identified images and the manuscript and subsequently delivered a written approval for the publication of the materials. HIPAA requirements were followed. Informed consent was not required.
Conflict of interest
One author (initials blinded for review) reports a conflict of interest that is unrelated to the submitted work: he is a shareholder of BICL, LLC, and a consultant to Pfizer, Novartis, Regeneron, AstraZeneca, Merck Serono, and TissueGene. All other authors have no conflict of interest.
Additional information
Publisher's note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
The original version of this article was revised. The correct name of the first author should be: Sofia Takkal.
Rights and permissions
About this article
Cite this article
Takkal, S., Diaz, L., Manuel, D. et al. Concomitant lipoma arborescens and synovial osteochondromatosis of the knee. Skeletal Radiol 51, 2211–2216 (2022). https://doi.org/10.1007/s00256-022-04053-1
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00256-022-04053-1