Stage II Appendix Carcinoma AJCC v9

**Semantic type:** Neoplastic Process

**Definition:** Stage II includes: IIA: T3, N0, M0, Any G; IIB: T4a, N0, M0, Any G; IIC: T4b, N0, M0, Any G. T3: Tumor invades through the muscularis propria into the subserosa or the mesoappendix. T4a: Tumor invades the visceral peritoneum, including acellular mucin or mucinous epithelium involving the serosa of the appendix or serosa of the mesoappendix. T4b: Tumor directly invades or adheres to adjacent organs or structures. N0: No tumor involvement of regional lymph node(s). M0: No distant metastasis. (AJCC 9th ed.)

**Synonyms:** - Stage II Appendiceal Carcinoma AJCC v9