Endometriosis of Groin Mimicking Neoplasm

P B Maharjan, R Makaju, S Makaju, Rachana Dhakal, R Dhakal, B Lama, Binita Lama, D Basnet, B Dhakal
Kathmandu University medical journal (KUMJ) · 2021 · vol. 19(1) , pp. 152–154 · doi:10.3126/kumj.v19i1.49608 · PMID:34812177 · W3216831692
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⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This report details a case of a 40-year-old woman with cyclical inguinal pain and swelling initially misdiagnosed as metastatic carcinoma, but ultimately confirmed via histopathology and immunohistochemistry as inguinal endometriosis.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-09 · read from full text ⓘ

The paper reports a case of a 40-year-old woman with a right groin (inguinal) swelling associated with cyclical pain, evaluated with fine needle aspiration cytology that showed atypical cells and led to a provisional diagnosis of metastatic carcinoma. Histopathological examination ultimately demonstrated endometrial glands and stroma, which was confirmed using immunohistochemistry. The authors emphasize that inguinal endometriosis is rare and difficult to diagnose because of its unusual location and can be mistaken for neoplasm. This paper is centrally about endometriosis — specifically inguinal endometriosis mimicking a neoplasm.

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Abstract

Endometriosis is principally a disease of women in active reproductive life. Although it is rare, foci of endometrial tissue may be seen in the bowel, the umbilicus, abdominal surgical scars and in the lungs. Inguinal endometriosis is challenging to the clinicians and pathologist and often diagnosed accidentally. We present a case of inguinal endometriosis mimicking neoplasm. A 40 year old woman presented with a swelling in the right inguinal region associated with cyclical pain. In view of presence of atypical cells in fine needle aspiration cytology, metastatic carcinoma was rendered as diagnosis. Histopathological examination revealed endometrial glands and stroma which was further confirmed by immunohistochemistry. Diagnosis of inguinal endometriosis is difficult and often challenging because of unusual site. The clinician must have high index of suspicion with any patient who has cyclical symptoms. A good history and physical examination can guide clinical diagnosis of endometriosis.
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Endometriosis of Groin Mimicking Neoplasm DOI: https://doi.org/10.3126/kumj.v19i1.49608Keywords: Endometriosis, Groin mass, Inguinal endometriosisAbstract Endometriosis is principally a disease of women in active reproductive life. Although it is rare, foci of endometrial tissue may be seen in the bowel, the umbilicus, abdominal surgical scars and in the lungs. Inguinal endometriosis is challenging to the clinicians and pathologist and often diagnosed accidentally. We present a case of inguinal endometriosis mimicking neoplasm. A 40 year old woman presented with a swelling in the right inguinal region associated with cyclical pain. In view of presence of atypical cells in fine needle aspiration cytology, metastatic carcinoma was rendered as diagnosis. Histopathological examination revealed endometrial glands and stroma which was further confirmed by immunohistochemistry. Diagnosis of inguinal endometriosis is difficult and often challenging because of unusual site. The clinician must have high index of suspicion with any patient who has cyclical symptoms. A good history and physical examination can guide clinical diagnosis of endometriosis.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Endometriosis Endometriosis Neoplasms Adult Cicatrix Cicatrix Female Groin Groin Humans Immunohistochemistry

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.

References (14)

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