Extragenital Endometriosis; A Rare Casue of Sciatica: A Case Report

Endometriosis is a common disease characterized by the presence of endometrial tissue outside the uterus, such as over, colon, nasal mucosa. Furthermore, it can affect sciatic nerve as a rare presentation causing cyclic sciatica, chronic pelvic pain, paresis, and paresthesia. Early diagnosis and treatment is very important to minimize the nerve damage caused by endometrial focus on sciatic nerve. Diagnosis of sciatica due to endometriosis can be made by magnetic resonance neurography (MRN), thereby identifying abnormalities of the sciatic nerve in patients with unexplained sciatica. MRN is a sensitive tool for evaluating both the lumbosacral plexus and sciatic nerve. We described a 38-year-old female patient with cyclic sciatica for 4 years. She had an endometrial focus compressing sciatic nerve at left sciatic foramen level that was diagnosed by MRN. In this case report, we aimed to underline the importance of appropriate diagnostic tools in the patients with extraspinal sciatica.