Two cases of pancreatic cancer with portal vein invasion are presented. In both cases a total duodenopancreatectomy was performed due to the extension of tumour. The portal vein invasion was diagnosed intraoperatively; it was a circular invasion in one case and a lateral invasion in the second case. A segmental resection of the portal vein (2 cm in length) with end-to-end anastomosis was performed in the first case, while a lateral excision with venorrhaphy was sufficient in the second case. The first patient died after six months while the second patient is still alive, without recurrence, at seven months postoperatively.