Digestive System Neuroendocrine Tumor G1

**Semantic type:** Neoplastic Process

**Definition:** A well-differentiated, low-grade neuroendocrine neoplasm that arises from the digestive system. The mitotic count is less than 2 per 2 mm2 and the Ki-67 index is less than 3%. The tumor can occur anywhere in the digestive system; approximately 90% arise in the appendix.

**Synonyms:** - Carcinoid Tumor of Digestive System - Carcinoid Tumor of GI System - Carcinoid Tumor of Gastrointestinal System - Carcinoid Tumor of the Digestive System - Carcinoid Tumor of the GI System - Carcinoid Tumor of the Gastrointestinal System - Digestive Carcinoid Tumor - Digestive System Carcinoid Tumor - GCT - GI Carcinoid Tumor - Gastrointestinal Carcinoid Tumor - Gastrointestinal NET G1 - Gastrointestinal Neuroendocrine Tumor G1 - Gastrointestinal Neuroendocrine Tumor G1 - Gastrointestinal System Carcinoid Tumor - gastrointestinal carcinoid tumor