Table 1.

Staging group for PC.

UICC disease stage	T staging	N staging	M staging
Stage 0	Tis	N0	M0
Stage IA	T1	N0	M0
Stage IB	T2	N0	M0
Stage IIA	T3	N0	M0
Stage IIB	T1–3	N1	M0
Stage III	T4	Any N	M0
Stage IV	Any T	Any N	M1

Tis: carcinoma in situ (the tumor is confined to the top layers of pancreatic duct cells. Very few pancreatic tumors are found at this stage).