Table 1.

Staging of Pancreatic Cancer

Stage	Tumor†	Nodal Status†	Distant Metastases†	Annotations
IA	T1	N0	M0	Tumor limited to the pancreas, ≤ 2 cm in longest dimension
IB	T2	N0	M0	Tumor limited to the pancreas, ≥ 2 cm in longest dimension
IIA	T3	N0	M0	The tumor extends beyond the pancreas, but the tumor does not involve the major arteries or veins near the pancreas
IIB	T1,T2,T3	N1	M0	The cancer has spread to regional lymph nodes
III	T4	N0 or N1	M0	The tumor extends beyond the pancreas into major arteries or veins near the pancreas. A T4 tumor is unresectable
IV	any T	N0 or N1	M1	There is metastasis to another part of the body, including distant lymph nodes. Distant spread of pancreatic cancer occurs mainly in the liver, peritoneum (lining of the abdominal cavity), and lungs

^†T describes the size and location of the primary tumour; N refers to regional lymph nodes; M refers to distant metastases