Endometriosis Mimicking Soft-Tissue Neoplasms: A Potential Diagnostic Pitfall

Yi Ding, Julie Gibbs, Ge Xiong, Shigong Guo, Shailaja KS Raj, Shailaja Raj, Marilyn M Bui
Cancer control : journal of the Moffitt Cancer Center · 2017 · vol. 24(1) , pp. 83–88 · doi:10.1177/107327481702400114 · PMID:28178719 · W2753271273
article OA: bronze CC0 ⤵ 8 in-corpus citations
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⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This paper presents two cases of endometriosis mimicking soft-tissue neoplasms in the wrist and groin, highlighting a diagnostic pitfall that may be avoided with thorough pathological evaluation and clinical correlation.

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Abstract

Endometriosis is a common gynecological disorder most often involving the pelvic region. Although it is rare, endometriosis occurring outside of the peritoneal cavity most commonly occurs within scars of the abdominal wall, but it has been reported in the lungs, pleura, kidneys, brain, and the extremities. Herein, we present 2 cases of endometriosis, including 1 case of endometriosis of the wrist that clinically mimicked a soft-tissue neoplasm and 1 case of right-groin endometriosis mimicking synovial sarcoma during the initial pathological interpretation of findings on fine needle aspiration. We also report on a third patient with synovial sarcoma to demonstrate a diagnostic pitfall. To our knowledge, endometriosis within the skeletal muscle of the wrist has not been previously reported in the literature. A literature review was performed, and we discuss how this diagnostic pitfall may be avoided. We review the techniques for diagnosing synovial sarcoma and the importance of a high index of suspicion for endometriosis when investigating any soft-tissue mass in a female patient of reproductive age. Adequate pathological evaluation in conjunction with the correlating clinical and radiological information should help facilitate an accurate diagnosis.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Sarcoma, Synovial Soft Tissue Neoplasms Adult Diagnosis, Differential Endometriosis Endometriosis Female Humans Prognosis Sarcoma, Synovial Sarcoma, Synovial Soft Tissue Neoplasms Soft Tissue Neoplasms Young Adult

Citation neighborhood

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. [ expand to 2 hops ] — adds papers reached through this work's immediate citers/citees. Heavier; up to 60 extra dots.

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License: CC0 · commercial use OK