Endometriosis at the knee. A case report

Patel VC, V C Patel, H Samuels, Homer S. Samuels, Samuels H, E Abeles, Abeles E, Hirjibehedin PF, P F Hirjibehedin
Clinical orthopaedics and related research · 1983 · pp. 140–4 · PMID:7140061 · W2089968204
Case report OA: closed CC0 ⤵ 15 in-corpus citations
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⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-06-09 ⓘ

This case report details a rare instance of endometriosis affecting the knee in a 32-year-old woman, which was initially misdiagnosed as synovial sarcoma on frozen section and should be considered in the differential diagnosis of extremity swelling in menstruating women.

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Abstract

A review of the world literature since 1928 failed to disclose a case of endometriosis affecting the knee. In the case of a 32-year-old women, synovial sarcoma was suspected on the basis of the histologic findings on frozen section, but final pathologic sections showed endometriosis. Synovial sarcoma classically consists if malignant stoma containing gland-like clefts and is easily confused with endometriosis. Affecting the extremities, endometriosis is rare. The condition should new be added to the differential diagnosis of extremity swelling in actively menstruating women.

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Condition tags

endometriosis

MeSH descriptors

Choristoma Endometriosis Endometrium Endometrium Knee Joint Knee Joint Adult Adult Biopsy Biopsy Choristoma Choristoma Danazol Danazol Danazol Endometriosis Endometriosis Endometriosis Endometriosis Female

Citation neighborhood (2-hop)

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. Outer rings show 2-hop neighbours — papers reached through the immediate citers/citees. [ collapse to 1-hop ]

Cited by (14)

Source provenance

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License: CC0 · commercial use OK