Stage III Colorectal Cancer AJCC v6

**Semantic type:** Neoplastic Process

**Definition:** Stage Group III is subdivided into IIIA (T1-2, N1, M0), IIIB (T3-4, N1, M0) or IIIC (any T, N2 M0). T1: Tumor invades the submucosa. T2: Tumor invades muscularis propria. T3: Tumor invades through the muscularis propria into the subserosa or into non-peritonealized pericolic or perirectal tissues. T4: Tumor directly invades other organs or structures, and/or perforates visceral peritoneum. N1: Metastasis in 1 to 3 regional lymph nodes N2: Metastasis in 4 or more regional lymph nodes. M0: No distant metastasis. (AJCC 6th ed.)

**Synonyms:** - Colorectal Cancer, Stage III AJCC v6 - Dukes C Colorectal Carcinoma - Dukes C colorectal cancer - Stage III Colorectal (Colon or Rectal) Cancer - Stage III Colorectal Carcinoma AJCC v6 - stage III colorectal cancer