Duodenal and Ampulla of Vater Neuroendocrine Tumor

**Semantic type:** Neoplastic Process

**Definition:** A well-differentiated, low-, intermediate-, or high-grade neoplasm with neuroendocrine differentiation that arises from the duodenum or ampulla of Vater.

**Synonyms:** - Duodenal and Ampulla of Vater NET - Duodenal and Ampulla of Vater Well Differentiated Neuroendocrine Neoplasm - Duodenal and Ampulla of Vater Well-Differentiated Neuroendocrine Neoplasm - Duodenum and Ampulla of Vater Well Differentiated Neuroendocrine Neoplasm - Duodenum and Ampulla of Vater Well-Differentiated Neuroendocrine Neoplasm