Magnetic resonance imaging findings of extrapelvic endometriosis of the round ligament

Hiroyuki Tokue, Tokue H, Tsushima Y, Yoshito Tsushima, Endo K, Keigo Endo
Japanese journal of radiology · 2009 · vol. 27(1) , pp. 45–47 · doi:10.1007/s11604-008-0293-0 · PMID:19373532 · W1992531497
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⚙ AI-generated summary by claude@2026-06+body, 2026-06-28 ⓘ

Magnetic resonance imaging revealed a round ligament mass with specific enhancement patterns in a woman presenting with a painful menstrual-associated inguinal mass, later diagnosed as endometriosis.

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⚙ AI-generated deep summary by claude@2026-07, 2026-07-09 · read from full text ⓘ

This paper reports a single case of a 31-year-old woman with a painful groin mass presenting around menses, who underwent evaluation with magnetic resonance imaging. MRI showed a poorly circumscribed elastic-hard mass with continuity along the inguinal course of the uterine round ligament, with strong enhancement and high signal on diffusion-weighted imaging. After surgery, histology confirmed endometriosis localized to the round ligament, and the patient’s pain was completely relieved postoperatively. The authors’ main caveat is that the evidence is limited to a case report. This paper is centrally about endometriosis — specifically extrapelvic endometriosis of the uterine round ligament presenting as a groin/inguinal mass.

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Abstract

A 31-year-old woman presented with a mass in her groin accompanied by intense pain during the menstrual period. A poorly circumscribed, elastic, hard mass was palpable in her right inguinal region. Magnetic resonance imaging showed that the mass had continuity with the inguinal course of the round ligament of the uterus. The mass lesion was well enhanced with high intensity on diffusion-weighted imaging. An operation was performed, and the histological diagnosis was endometriosis of the round ligament. After operation, she was completely relieved of pain. It is important to include endometriosis in the differential diagnosis in women with painful inguinal mass lesions at risk for endometriosis.
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Abstract

A 31-year-old woman presented with a mass in her groin accompanied by intense pain during the menstrual period. A poorly circumscribed, elastic, hard mass was palpable in her right inguinal region. Magnetic resonance imaging showed that the mass had continuity with the inguinal course of the round ligament of the uterus. The mass lesion was well enhanced with high intensity on diffusion-weighted imaging. An operation was performed, and the histological diagnosis was endometriosis of the round ligament. After operation, she was completely relieved of pain. It is important to include endometriosis in the differential diagnosis in women with painful inguinal mass lesions at risk for endometriosis. Similar content being viewed by others

References

Cullen TS. Adenomyoma of the round ligament. Johns Hosp Bull 1896;7:112–114. Sataloff DM, La Vorgna KA, McFarland MM. Extrapelvic endometriosis presenting as a hernia: clinical reports and review of the literature. Surgery 1989;105:109–112. Kapan M, Kapan S, Durgun AV, Goksoy E. Inguinal endometriosis. Arch Gynecol Obstet 2005;271:76–78. Ideyi SC, Schein M, Niazi M, Gerst PH. Spontaneous endometriosis of the abdominal wall. Dig Surg 2003;20:246–248. Seli E, Berkkanoglu M, Arici A. Pathogenesis of endometriosis. Obstet Gynecol Clin North Am 2003;30:41–61. Luciano AA, Pitkin RM. Endometriosis: approaches to diagnosis and treatment. Surg Ann 1984;16:297–312. Wolf GC, Kopecky KK. MR imaging of endometriosis arising in cesarean section scar. J Comput Assist Tomogr 1989;13:150–152. Singh KK, Lessels AM, Adam DJ, Jordan C, Miles WF, Greig JD. Presentation of endometriosis to general surgeons: a 10 year experience? Br J Surg 1995;82:1349–1351. Sataloff DM, LaVorgna KA, McFarland MM. Extrapelvic endometriosis presenting as a hernia clinical reports and review of the literature. Surgery 1989;105:109–112. Miranda L, Settembre A, Capasso P, Picolboni D, De Rosa N, Coroione F. Inguinal endometriosis or irreducible hernia? A difficult preoperative diagnosis. Hernia 2001;5:47–49. Turpin F, Daclin PY, Karam R, Mény R, Salanon AP, Paramette PJ, et al. A case of muscular and canal of Nuck involvement by endometriosis. J Radiol 2001;82:933–935. Author information Authors and Affiliations Corresponding author About this article Cite this article Tokue, H., Tsushima, Y. & Endo, K. Magnetic resonance imaging findings of extrapelvic endometriosis of the round ligament. Jap J Radiol 27, 45–47 (2009). https://doi.org/10.1007/s11604-008-0293-0 Received: Accepted: Published: Issue date: DOI: https://doi.org/10.1007/s11604-008-0293-0

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Groin Round Ligament of Uterus Adult Diagnosis, Differential Endometriosis Endometriosis Female Groin Humans Magnetic Resonance Imaging Menstrual Cycle Round Ligament of Uterus

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