Duodenum/Ampulla/Jejunum/Ileum Neuroendocrine Tumor pT3 TNM Finding v7

**Semantic type:** Finding

**Definition:** Duodenum/ampulla/jejunum/ileum neuroendocrine tumor invading through the muscularis propria into subserosal tissue without penetration of overlying serosa (jejunal or ileal tumors) or invading pancreas or retroperitoneum (ampullary or duodenal tumors) or into non-peritonealized tissues. (from AJCC 7th Ed.)