Malignant mixed müllerian tumor of the uterus arising in association with a viable gestation

Malignant mixed müllerian tumors of the uterus are rare neoplasms occurring predominantly in postmenopausal women. We report the prenatal course and diagnosis of a stage III malignant mixed müllerian tumor at cesarean section in a 35-year-old woman. Despite aggressive radiation and chemotherapy, the patient died 14 weeks after diagnosis and initial surgical therapy. The premature infant had an uneventful course.