Table 1.

Definition criteria of resectability by NCCN v 1.2019.

Resectability Status	Arterial	Venous
Resectable	No tumoral contact with CeT, SMA, or CHA	No tumoral contact with SMV, PV, or ≤180° without irregularity of the venous contour
Resectability borderline	Head and uncinate process: Tumoral contact with CHA without CeT extension or CHA bifurcation allowing safety and complete resection and reconstruction Tumoral contact in SMA ≤ 180°. Tumoral contact with an anatomical variant of CHA	Head and uncinate process: Tumoral contact with IVC, PV > 180° with venous contour irregularities or thrombosis, but with free proximal and distal portions that allow a suitable resection
	Body-tail: Tumoral contact with CeT ≤ 180° Tumoral contact with CeT ≥ 180° without aorta involvement, with gastroduodenal artery intact
Unresectable	Distant metastasis (includes lymph nodes but not regionals): Head and uncinate process: Tumoral contact with AMS > 180° Tumoral contact in CeT > 180°	Head and uncinate process: SMV and PV irreconstructable by thrombosis or tumoral infiltration. Contact with the sewer system in the 1st jejunal venous branch
	Body-tail: Tumoral contact with AMS or CeT > 180° Tumoral contact with CeT and aorta	Body-tail: SMV and PV irreconstructable by thrombosis or tumoral infiltration

CeT: celiac trunk; SMA: superior mesenteric artery; CHA: common hepatic artery; SMV: superior mesenteric vein; PV: portal vein; IVC: inferior vena cava.