How is the staging of pancreatic cancer?

TNM T: tumor (TX (not assessed), T0(no tumor), Tis (carcinoma in situ) T1 (limited to pancreas <2cm), T2 (limited to pancreas >2cm), T3 (beyond pancreas but not SMA/ celiac axis), T4 (invades all)) N (lymph node metastasis, NX(can't be assessed), N0 (no metastasisi) N1 (metastasis)) M (distant metastasis same as N) Staging according to AJCC staging Stage 0 (Tis, N0,M0), Stage IA (T1, N0,M0, Stage IB (T2, N0,M0), Stage IIA (T3, N0,M0), Stage IIB (T1/T2/T3, N1,M0), Stage III (T4, N1, M0), Stage IV (Any T, any N, M1)