Table III.

Criteria defining respectability status according to NCCN guidelines [9]

Resectability status	Arterial	Venous
Resectable	No arterial tumour contact (celiac axis (CA), superior mesenteric artery (SMA) or common hepatic artery (CHA))	No tumour contact with the superior mesenteric vein (SMV) or portal vein (PV) or ≤ 180° contact with vein contour irregularity
Borderline resectable	Pancreatic head/uncinate process: Solid tumour contact with CHA without extension to CA or hepatic artery bifurcation allowing for safe and complete resection and reconstruction Solid tumour contact with the SMA of < 180° Solid tumour contact with variant arterial anatomy (e.g. accessory right hepatic artery, replaced right hepatic artery, replaced CHA, and the origin of replaced or accessory artery) and the presence and degree of tumour contact should be noted if present as it may affect surgical planning Pancreatic body/tail: Solid tumour contact with the CA of < 180° Solid tumour contact with the CA of > 180° without involvement of the aorta and with intact and uninvolved gastroduodenal artery permitting modified Appleby procedure (some panel members prefer these criteria to be in the unresectable category)	Solid tumour contact with the SMV or PV > 180°, contact of ≤ 180° with contour irregularity of the vein or thrombosis of the vein but with suitable vessel proximal or distal to the site of involvement allowing for safe and complete resection and vein reconstruction Solid tumour contact with the inferior vena cava (IVC)
Unresectable	Distant metastases (including non-regional lymph node metastases) Pancreatic head/uncinate process: Solid tumour contact with the SMA of > 180° Solid tumour contact with the CA of > 180° Pancreatic body/tail: Solid tumour contact of > 180° with the SMA or CA Solid tumour contact with the CA and aortic involvement	Pancreatic head/uncinate process: Unreconstructible SMV/PV due to tumour involvement or occlusion (can be due to tumour or bland thrombus) Contact with the most proximal draining jejunal branch into SMV Pancreatic body/ tail: Unreconstructible SMV/PV due to tumour involvement or occlusion (can be due to tumour or bland thrombus)