A CASE OF INGUINAL ENDOMETRIOSIS

Shinichi Ikuta, Kazuhiko Uefuji, Takashi Ichikura, Hideki Ueno, Hidetaka Mochizuki
In: Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) · 1999 · vol. 60(9) , pp. 2463–2468 · doi:10.3919/jjsa.60.2463 · W2312472330
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A 48-year-old woman with a history of hysterectomy was diagnosed with rare inguinal endometriosis presenting as a hard, fixed tumor after excisional biopsy revealed endometrial glands and stroma without malignancy.

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This case report describes a 48-year-old woman presenting with a painless, hard inguinal tumor eight years after a hysterectomy for uterine leiomyoma. Initial diagnostic workup, including fine needle aspiration and imaging, raised suspicion for metastatic adenocarcinoma due to the presence of epithelial cells and nuclear atypia. However, excisional biopsy revealed endometrial glands and stroma within fibrous tissue without malignant features, leading to a definitive diagnosis of primary inguinal endometriosis. The authors note that this location is exceptionally rare, accounting for approximately 0.4% of all endometriosis sites, and provide bibliographical context for such unusual presentations. This paper is centrally about endometriosis — specifically a rare extra-pelvic manifestation in the inguinal region.

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Abstract

A 48-year-old woman was admitted to the hospital because of a painless tumor in the right inguinal region. There was a previous history of undergoing a simple hysterectomy for uterine leiomyoma eight years before admission. Physical examinations revealed a right inguinal tumor, which was hard, fixed, and 2×2cm in size. Ultrasonography revealed the right inguinal tumor to be a low echoic lesion, and a tentative diagnosis was a swollen lymph node. Fine needle aspiration cytology of the tumor showed few lymphoid cells and some epithelial cells with a little nuclear atypia, suggesting metastatic adenocarcinoma. Barium enema study, trans-vaginal ultrasonography and computed tomography of the pelvis did not show any primary cancer lesions. To make the precise diagnosis, an excisional biopsy of the right inguinal tumor was performed. The tumor was strongly adherent to adjacent tissues. Histological examination revealed endometrial glands and stroma surrounded with fibrous tissues, without any findings of malignancy. From these findings, the tumor was diag-nosed as inguinal endometriosis. The inguinal region is a rare site for endometriosis that accounts for about 0.4% of all sites involved with endometriosis. This very rare case with some bibliographical comments are presented.
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A CASE OF INGUINAL ENDOMETRIOSIS 1999 Volume 60 Issue 9 Pages 2463-2468 Details Abstract A 48-year-old woman was admitted to the hospital because of a painless tumor in the right inguinal region. There was a previous history of undergoing a simple hysterectomy for uterine leiomyoma eight years before admission. Physical examinations revealed a right inguinal tumor, which was hard, fixed, and 2×2cm in size. Ultrasonography revealed the right inguinal tumor to be a low echoic lesion, and a tentative diagnosis was a swollen lymph node. Fine needle aspiration cytology of the tumor showed few lymphoid cells and some epithelial cells with a little nuclear atypia, suggesting metastatic adenocarcinoma. Barium enema study, trans-vaginal ultrasonography and computed tomography of the pelvis did not show any primary cancer lesions. To make the precise diagnosis, an excisional biopsy of the right inguinal tumor was performed. The tumor was strongly adherent to adjacent tissues. Histological examination revealed endometrial glands and stroma surrounded with fibrous tissues, without any findings of malignancy. From these findings, the tumor was diag-nosed as inguinal endometriosis. The inguinal region is a rare site for endometriosis that accounts for about 0.4% of all sites involved with endometriosis. This very rare case with some bibliographical comments are presented. © Japan Surgical Association Favorites & Alerts Recently viewed articles

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endometriosis

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