Endometriosis of the sciatic nerve

, manifesting as cyclic sciatica, parestesis and pa-resis with loss of deep tendon reflex. We cite a case of sci-atica endometriosis and make a review of the literature.CASEA 26-year-old Caucasian woman exhibits intense pain and weakness in the lower left limb, which had pro-gressed over the past nine years. She had no previous pregnancy and symptoms were worse during the men-strual period. During examination, a dorsiflexion paresis of the left foot was notable. Magnetic resonance imagining (MRI) revealed an expansive process in the left sciatic nerve to-pography at gluteal topography.The patient was referred for microsurgery, pro-ceeding exeresis of a cystic lesion in the left sciatic nerve. Neuropathology analysis showed an endometrioma (Figure). The patient had no complications during the post-operative period.During initial follow-up, dorsiflexion paresis in the left foot persisted. Post-operative MRI showed a cica-tricial process, with no residual tumor. The eletroneu-romiography (ENMG) displayed signs of a subacute de-nervatory process.DISCUSSIONEndometriosis is a chronic recurrent pathology, char-acterized by proliferation of endometrial tissue outside the uterine cavity