Coexistent immature teratoma of the uterus and endometrial adenocarcinoma complicated by gliomatosis peritonei.

A 37-year-old nulliparous woman presented with severe vaginal bleeding due to a primary immature teratoma of the uterus (Grade II on the Norris scale). The subsequent hysterectomy specimen showed well-differentiated endometrial adenocarcinoma. Mature glial implants were present on both ovaries and throughout the omentum. Postoperative recovery was uneventful and the patient received a course of pelvic radiotherapy. She has remained well with no evidence of recurrence. Primary benign solid teratoma of the uterus is rare. This appears to be the first reported case of primary immature uterine teratoma.