Succinate Dehydrogenase-Deficient Gastrointestinal Stromal Tumor

**Semantic type:** Neoplastic Process

**Definition:** A gastrointestinal stromal tumor characterized by the presence of mutations in the SDH genes and absence of mutations in the KIT and PDGFRA genes. It has an epithelioid morphology and a multinodular growth pattern.

**Synonyms:** - SDH-Deficient GIST - SDH-Mutated GIST - Succinate Dehydrogenase-Mutated Gastrointestinal Stromal Tumor