Oncological outcome of proximal and middle extrahepatic bile duct cancer according to surgical extent (Is hilar resection oncologically acceptable in proximal and middle extrahepatic bile duct cancer?)

Abstract

BackgroundFor proximal to middle bile duct cancer, it is controversial whether bile duct resection alone is sufficient, or whether hepatic or pancreatic resection should be accompanied by initial planning. This study aimed to determine the optimal surgical extent based on oncological outcomes in patients with proximal to middle bile duct cancer. MethodsPatients who underwent surgery for proximal to middle extrahepatic bile duct cancer, hilar resection, or combined resection of other organs were included. Clinicopathological characteristics and survival analyses were compared according to operation type. ResultsAmong 156 patients in total, R0 rate was 56.7% for hilar resection and 82.7% for other organ resection. Although hilar resection was associated with shorter hospital stay and fewer overall complications, operation type did not affect overall survival (p = 0.259) and disease-free-survival (p = 0.774). Overall survival differed according to R status (5YSR 49.8 vs. 27.1%; p = 0.012). ConclusionIn proximal to middle extrahepatic bile duct cancer, surgery should be tailored to achieve R0 resection according to the extent of the disease rather than uniformly resecting extensively with other organ resections. Hilar resection could be selected if R0 resection is feasible, considering the lower morbidity with similar long-term survival.