Stage IIB Appendix Carcinoma AJCC v9

**Semantic type:** Neoplastic Process

**Definition:** Stage IIB includes: T4a, N0, M0, Any G. T4a: Tumor invades the visceral peritoneum, including acellular mucin or mucinous epithelium involving the serosa of the appendix or serosa of the mesoappendix. N0: No tumor involvement of regional lymph node(s). M0: No distant metastasis. (AJCC 9th ed.)

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