16. 大肠癌临床分期 Clinical stage of colorectal cancer Dukes Stage Dukes A 期 癌限于肠壁内 A 1 期:粘膜内及粘膜下层 A 2 期:累及浅肌层 A 3 期:累及深肌层 Dukes B :穿透肠壁 无淋巴结转移 Dukes C 期 有淋巴结转移 C 1 期:肠壁及肠旁转移 C 2 期:系膜和系膜根部转移 Dukes D 期:远处转移或腹腔种植; 广泛侵及邻近脏器无法切除
17. TNM classification of the colorectal carcinoma T: primary tumour Tx: primary tumour cannot be assessed T 0 : no evidence of primary tumour T is : carcinoma in situ T 1 : tumour invades submucosa T 2 : tumour invades muscularis propria T 3 : tumor invades through the muscularis propria into the subserosa, or into peritonealized pericolic or perirectal tissues T 4 : tumor perforates the visceral peritoneum or directaly invades other organs or structures
18. N: regional lymph nodes Nx: regional lymph nodes cannot be assessed N 0 : no regional lymph nodes metastasis N 1 : metastasis in one to three pericolic or perirectal lymph nodes N 2 : metastasis in four or more pericolic or perirectal lymph nodes N 3 : metastasis in any lymph node along the course of a name vascular trunk TNM classification of the colorectal carcinoma
19. TNM classification of the colorectal carcinoma M: distant metastasis Mx: presence of distant metastasis cannot be assessed M 0 : no distant metastasis M 1 : distant metastasis
20. TNM classification of the colorectal carcinoma Stage grouping TNM ( D ) M 1 Any N Any T Ⅳ C M 0 N 2 , N 3 Any T C M 0 N 1 Any T Ⅲ B M 0 N 0 T 4 B M 0 N 0 T 3 Ⅱ A M 0 N 0 T 2 A M 0 N 0 T 1 Ⅰ M 0 N 0 Tis 0 Dukes Stage