{"paper_id":"887c97ba-215c-4a4b-9c99-df110736e30f","body_text":"Abstract\nWe report the case of a young woman with recurrent unilateral hip pain. A polylobular cystic mass was found in the right adductor space. Magnetic resonance imaging (MRI) revealed a polynodular mass migrating from the intrapelvic region along the obturator nerve. Because of a history of cyclic pain and the characteristics on MRI (hypointense rim and spots of spontaneous hyperintense signal on T1-weighted images), an endometrioma was suspected. The diagnosis of endometriosis was later confirmed through ultrasound-guided biopsy.\nReferences\nHonoré GM. Extrapelvic endometriosis. Clin Obstet Gynecol. 1999;42(3):699–711.\nFambrini M, Andersson KL, Campanacci DA, Vanzi E, Bruni V, Buccoliero AM, et al. Large-muscle endometriosis involving the adductor tight compartment: case report. J Minim Invasive Gynecol. 2010;17(2):258–61.\nRedwine DB, Sharpe DR. Endometriosis of the obturator nerve. A case report. J Reprod Med. 1990;35(4):434–5.\nEkpo G, Senpati S, Advincula AP. Laparoscopic excision of endometriosis of the obturator nerve: a case report. J Minim Invasive Gynecol. 2007;14(6):764–6.\nLangebrekke A, Qvigstad E. Endometriosis entrapment of the obturator nerve after previous cervical cancer surgery. Fertil Steril. 2009;91(2):622–3.\nWoodward PJ, Sohaey R, Mezzetti TP. Endometriosis: radiologic–pathologic correlation. Radiographics. 2001;21:193–216.\nAuthor information\nAuthors and Affiliations\nCorresponding author\nAbout this article\nCite this article\nWaer, P., Samson, I., Sinnaeve, F. et al. Perineural spread of endometriosis along the obturator nerve into the adductor thigh compartment. Jpn J Radiol 30, 446–449 (2012). https://doi.org/10.1007/s11604-012-0060-0\nReceived:\nAccepted:\nPublished:\nIssue date:\nDOI: https://doi.org/10.1007/s11604-012-0060-0","source_license":"CC0","license_restricted":false}