Duodenal and Ampulla of Vater Neuroendocrine Tumor pT2 TNM Finding v9

**Semantic type:** Finding

**Definition:** For duodenum neuroendocrine tumor: Tumor invades the muscularis propria or is more than 1 cm in greatest dimension. For ampulla of Vater neuroendocrine tumor: Tumor invades through sphincter of Oddi into duodenal submucosa or muscularis propria or is more than 1 cm in greatest dimension. (from AJCC 9th Ed.)

**Synonyms:** - Duodenum and Ampulla of Vater Neuroendocrine Tumor pT2 TNM Finding v9