Table 1 T N M classification of carcinoma of the ampulla of Vater
T (Primary tumour) | |
|---|---|
Tx | Primary tumour cannot be assessed |
T1 | Tumour limited to the ampulla of Vater or aphincter of Oddi |
T2 | Tumour invades duodenal wall |
T3 | Tumor invades 2 cm or less into pancreas |
T4 | Tumor invades more than 2 cm into pancreas and/or into other adjacent organs |
N (Regional lymph nodes) | |
Nx | Regional lymph nodes cannot be assessed |
NO | No regional lymph nodes metastasis |
N1 | Regional lymph nodes metastasis |
M (Distant metastasis) | |
Mx | Distant metastasis not assessable |
M0 | No distant metastasis |
M1 | Distant metastasis: Hepatic metastasis, peritoneal dissemination, lymph nodes metastasis along the splenic vein or at the splenic hilum |