Small Intestine Cancer pT1b TNM Finding v7

**Semantic type:** Finding

**Definition:** Small intestine cancer with tumor invading the submucosa. Note: The nonperitonealized perimuscular tissue is, for jejunum and ileum, part of the mesentery and, for duodenum in areas where serosa is lacking, part of the interface with the pancreas. (from AJCC 7th Ed.)