Small Intestine Cancer Pathologic TNM Finding v7

**Semantic type:** Finding

**Definition:** A pathologic finding about one or more characteristics of small intestine cancer, following the rules of the TNM AJCC v7 classification system. The primary tumor is staged according to its depth of penetration and the involvement of adjacent structures or distant sites. Lateral spread within the duodenum, jejunum, or ileum is not considered in this classification. Only the depth of tumor penetration into the bowel wall and spread to other structures defines the pT stage. (from AJCC 7th Ed.)