Phyllodes Tumor

**Definition:** A type of connective tissue neoplasm typically arising from intralobular stroma of the breast. It is characterized by the rapid enlargement of an asymmetric firm mobile mass. Histologically, its leaf-like stromal clefts are lined by EPITHELIAL CELLS. Rare phyllodes tumor of the prostate is also known.

**Tree numbers:** - C04.557.450.795.650

**Synonyms:** - Cystosarcoma Phyllodes - Cystosarcoma Phylloides