Endometriosis affects about 2 to 10% of women in fertile age, It causes pain and infertility. In the ovaries, endometrios causes endometriomas. The disease may spread into the abdominal cavity and even result in ileus. Deep endometriomas are located under the peritoneal surface, typically behind the uterus and in the region of uterosacral ligaments. History, clinical examination and transvaginal ultrasound scanning usually lead to the diagnosis. Magnetic resonance imaging is in particular utilized prior to surgery. It provides a comprehensive view of endometriosis lesions in the pelvis, including deep foci.