Vein resection in patients with adenocarcinoma of the head of pancreas adherent to the portomesenteric venous axis is beneficial despite a high rate of R1 resection

En-bloc vein resection (VR) for pancreatic ductal adenocarcinoma (PDAC) of the head of pancreas adherent to the portomesenteric axis benefits patients when the vein wall is not infiltrated by tumour and an R0 resection is achieved, albeit at the expense of greater morbidity and mortality