Malignant Granular Cell Tumor

**Semantic type:** Neoplastic Process

**Definition:** An uncommon granular cell tumor that may metastasize to other anatomic sites. Morphologic characteristics include the presence of spindling neoplastic cells, necrosis, extensive pleomorphism, prominent nucleoli, and increased mitiotic activity.

**Synonyms:** - GRANULAR CELL TUMOR, MALIGNANT - Granular cell myoblastoma, malignant - Granular cell tumor, malignant - Malignant Granular Cell Myoblastoma - Malignant Granular Cell Myoblastoma - Malignant Granular Cell Neoplasm - Malignant Granular Cell Neoplasm - Myoblastoma, Malignant