Long-term survival in patients with distal cholangiocarcinoma after pancreaticoduodenectomy combined with portal vein system resection and reconstruction.

PURPOSE Pancreaticoduodenectomy combined with portal vein resection for distal cholangiocarcinoma is rarely reported because it is a rare disease. We developed a program to evaluate the vascular invasion type, operation procedure, and long-term survival of distal cholangiocarcinoma patients with portal vein invasion. METHODS We retrospectively reviewed data for 123 distal cholangiocarcinoma patients after pancreaticoduodenectomy between January 2013 and December 2019. Portal vein system invasion was confirmed pathologically in 17 patients. RESULTS Multivariable Cox regression identified tumor differentiation degree, portal vein system invasion, and lymph node metastasis as independent risk factors affecting long-term survival. The 1- and 2-year overall survival rates for patients without and with portal vein system invasion were 79.7% and 58.9%, and 48.6% and 10.8%, respectively. Median overall survival in patients without and with portal vein system invasion was 33 months and 12 months, respectively. CONCLUSION Portal vein system invasion is an important independent risk factor affecting long-term survival in patients with distal cholangiocarcinoma. Pancreaticoduodenectomy combined with portal vein system resection and reconstruction did not increase the incidence of perioperative complications or mortality.