Ampulla of Vater Cancer pT1b TNM Finding v8

**Semantic type:** Finding

**Definition:** Ampulla of Vater cancer with tumor invading beyond the sphincter of Oddi (perisphincteric invasion) and/or into the duodenal submucosa. (from AJCC 8th Ed.)

**Synonyms:** - Ampulla of Vater Carcinoma pT1b TNM Finding v8