Uterine Malignant Mixed Mesodermal (Mullerian) Tumor, Heterologous Type

**Semantic type:** Neoplastic Process

**Definition:** A malignant mixed mesodermal (Mullerian) tumor of the uterus characterized by the presence of sarcomatous elements composed of tissues that are not found in the uterus (e.g., bone, cartilage, skeletal muscle).