Type B Spindle Cell Melanoma

**Semantic type:** Neoplastic Process

**Definition:** A melanoma characterized by the presence of malignant spindle-shaped melanocytes with larger nuclei and distinct nucleoli. Representative example is the type B spindle cell uveal melanoma.

**Synonyms:** - Malignant Spindle Cell Type B Melanoma - Spindle Cell Type B Malignant Melanoma - Spindle cell melanoma, type B