Duodenal and Ampulla of Vater Neuroendocrine Tumor pT1 TNM Finding v8

**Semantic type:** Finding

**Definition:** Duodenum neuroendocrine tumor invading the mucosa or submucosa only and is equal or less than 1 cm; Ampulla of Vater neuroendocrine tumor measuring 1 cm or less and is confined within the sphincter of Oddi. (from AJCC 8th Ed.)

**Synonyms:** - Duodenum and Ampulla of Vater Neuroendocrine Tumor pT1 TNM Finding v8