Stage I Appendix Carcinoma AJCC v9

**Semantic type:** Neoplastic Process

**Definition:** Stage I includes: (T1, N0, M0, Any G); (T2, N0, M0, Any G). T1: Tumor invades the submucosa (through the muscularis mucosa but not into the muscularis propria). T2: Tumor invades the muscularis propria. N0: No tumor involvement of regional lymph node(s). M0: No distant metastasis. (AJCC 9th ed.)

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