Table A4. Criteria of resectability for pancreatic cancer.

Resectability status	Arterial	Venous
Resectable	No arterial tumor contact [celiac axis (CA)], superior mesenteric artery (SMA), or common hepatic artery (CHA)]	No tumor contact with the superior mesenteric vein (SMV) or portal vein (PV) or ≤180° contact without vein contour irregularity
Borderline resectable	Pancreatic head and neck: Solid tumor contact with CHA without extension to CA or hepatic artery bifurcation allowing for safe and complete resection and reconstruction. Solid tumor contact with the SMA of ≤180°. Solid tumor contact with variant arterial anatomy (ex: accessory right hepatic artery, replaced right hepatic artery, replaced CHA, and the origin of replaced or accessory artery) and the presence and degree of tumor contact should be noted if present, as it may affect surgical planning	Pancreatic head and neck: Solid tumor contact with the SMV or PV of >180°, contact of ≤180° with contour irregularity of the vein or thrombosis of the vein but with suitable vessel proximal and distal to the site of involvement allowing for safe and complete resection and vein reconstruction. Solid tumor contact with the inferior vena cava (IVC)
	Pancreatic body and tail: Solid tumor contact with the CA of ≤180°. Solid tumor contact with the CA of >180° without involvement of the aorta and with intact and uninvolved gastroduodenal artery	Pancreatic body and tail: Solid tumor contact with the confluence of splenic vein and PV, or contact with the left side of PV of ≤180° with contour irregularity of the vein or thrombosis of the vein but with suitable vessel proximal and distal to the site of involvement allowing for safe and complete resection and vein reconstruction. Solid tumor contact with the inferior vena cava (IVC)
Unresectable
Locally advanced	Pancreatic head and neck: Solid tumor contact with SMA >180°. Solid tumor contact with the CA >180°. Solid tumor contact with the first jejunal branch of SMA	Pancreatic head and neck: Unreconstructible SMV/PV due to tumor involvement or occlusion (can be due to tumor or bland thrombus). Contact with most proximal draining jejunal branch into SMV
	Pancreatic body and tail: Solid tumor contact of >180° with the SMA or CA. Solid tumor contact with the CA and aortic involvement	Pancreatic body and tail: Unreconstructible SMV/PV due to tumor involvement or occlusion (can be due to tumor or bland thrombus).
Distant metastasis	Distant metastasis (including nonregional lymph node metastasis)	Distant metastasis (including nonregional lymph node metastasis)