AJCC stage TNM stage
Stage 0 Tis N0 M0 Tis : Tumor confined to mucosa; cancer-in-situ
Stage I T1 N0 M0 T1 : Tumor invades submucosa
Stage I T2 N0 M0 T2 : Tumor invades muscularis propria
Stage II-A T3 N0 M0 T3 : Tumor invades subserosa or beyond (without other organs involved)
Stage II-B T4 N0 M0 T4 : Tumor invades adjacent organs or perforates the visceral peritoneum
Stage III-A T1-2 N1 M0 N1 : Metastasis to 1 to 3 regional lymph nodes. T1 or T2.
Stage III-B T3-4 N1 M0 N1 : Metastasis to 3 to 4 regional lymph nodes. T3 or T4.
Stage III-C any T, N2 M0 N2 : Metastasis to 4 or more regional lymph nodes. Any T.
Stage IV any T, any N, M1 M1 : Distant metastases present. Any T, any N.