T1a   Lamina propria, Muscularis mucisae

T1b   Submukosa

T2     Muscularis propria

T3     Subserosa

T4     Perforation der Serosa, Nachbarstrukturen

N1     1-2 Lymph nodes青海大学附属医院肿瘤外科燕速

N2     3-6 Lymph nodes

N3a   7-15 Lymph nodes

N3b    >=16 Lymph nodes

Stage    0      Tis   N0     M0

Stage ⅠA      T1   N0     M0

Stage ⅠB      T2   N0     M0

               T1   N1     M0

Stage ⅡA      T3   N0     M0

               T2   N1     M0

               T1   N2     M0

Stage ⅡB      T4a N0      M0  

               T3  N1      M0

Stage ⅢA      T4a     N0      M0

               T3      N2      M0

               T2      N3      M0

Stage ⅢB      T4      N3      M0

Stage Ⅳ       any T    any N    M1