Table 1.

TNM Pancreatic Cancer Staging (American Joint Committee on Cancer.)

Stage	Definition
Primary Tumor (T)
T0	No evidence of primary tumor
Tis	Carcinoma in situ
T1	Tumor limited to pancreas, ≤ 2cm
T2	Tumor limited to pancreas, ≥ 2cm
T3	Extension into peri-pancreatic tissues (excluding arteries)
T4	Tumor involves celiac axis or superior mesenteric artery
Regional lymph nodes (N)
Nx	Regional lymph nodes not assessed
N0	No metastatic regional lymph nodes
N1	Metastatic regional lymph nodes
Distant metastases (M)
M0	No distant metastatic disease
M1	Distant metastatic disease

American Joint Committee on Cancer (AJCC) TNM staging system, September 6, 2013. American Cancer Society. Available at http://www.cancer.org/cancer/pancreaticcancer/detailedguide/pancreatic-cancer-staging. April 5, 2016; Accessed November 28, 2017.