Perineural spread of endometriosis along the obturator nerve into the adductor thigh compartment
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Updated: May 24, 2026

Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer
Published on: February 12, 2022
Pieter Waer1, Ignace Samson, Friedl Sinnaeve
1Department of Radiology, University Hospitals of Leuven, Herestraat 49, 3000 Leuven, Belgium. pieter.waer@uzleuven.be
Abstract:
We 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.
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