Mast Cell Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A heterogeneous group of disorders characterized by the abnormal growth and accumulation of mast cells in one or more organ systems. Recent data suggest that most variants of mast cell neoplasms are clonal disorders. (WHO, 2001)

**Synonyms:** - Mast Cell Proliferative Disease - Mast Cell Tumor - Mast Cell Tumors - Mast cell tumor, NOS - Neoplasm of Mast Cells - Neoplasm of the Mast Cells - Tumor of Mast Cells - Tumor of the Mast Cells - mast cell tumor