Appendiceal Carcinoid pT4 TNM Finding v7

**Semantic type:** Finding

**Definition:** Appendiceal carcinoid with tumor directly invading other adjacent organs or structures, e.g., abdominal wall and skeletal muscle. Penetration of the mesoappendix does not seem to be as important a prognostic factor as the size of the primary tumor and is not separately categorized. (from AJCC 7th Ed.)