Retroperitoneal endometriotic cyst in a woman with post menopausal and post hysterectomy status a case report

Retroperitoneal endometriosis in patients with post hysterectomy status is very rare. Usually the patients presents with severe abdominal pain. We present an exemplary case of a post menopausal woman with past history of hysterectomy and bilateral salpingo-oophorectomy presenting with severe abdominal pain. She was found to have a retroperitoneal mass at the root of sigmoid mesentery on computed tomography. Biopsy and histopathological analysis revealed retroperitoneal endometriotic cyst.