Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastrointest Oncol. May 15, 2014; 6(5): 112-120
Published online May 15, 2014. doi: 10.4251/wjgo.v6.i5.112
Table 1 TNM system, specifically referring to depth of invasion in T staging
Category Description
TisCarcinoma in situ
T1Tumors invade lamina propria or submucosa
T2Tumors invade muscularis propria
T3Tumors invade adventitia
T4Tumors invade adjacent structures
N0No regional lymph node metastases
N1Regional lymph node metastases
M0No distant metastasis
M1a, M1bDistant metastasis