Malignant Breast Phyllodes Tumor

**Semantic type:** Neoplastic Process

**Definition:** A phyllodes tumor of the breast characterized by infiltrative margins and a sarcomatous stromal component. The sarcomatous stroma usually displays features of fibrosarcoma. Liposarcomatous, osteosarcomatous, or rhabdomyosarcomatous elements may also be present.

**Synonyms:** - Malignant Breast Phyllodes Neoplasm - Malignant Mammary Phyllodes Neoplasm - Malignant Mammary Phyllodes Tumor - Malignant Phyllodes Breast Neoplasm - Malignant Phyllodes Neoplasm of Breast - Malignant Phyllodes Neoplasm of the Breast - Malignant Phyllodes Tumor of Breast - Malignant Phyllodes Tumor of the Breast