Preoperative course of patients undergoing endoscopic nasobiliary drainage during the management of resectable perihilar cholangiocarcinoma

Background Although there are many studies on technical outcomes of endoscopic nasobiliary drainage (ENBD), no authors reported on preoperative course of patients undergoing ENBD. The aim of this study was to investigate the course of patients with ENBD during the waiting period. Methods Patients who underwent resection of perihilar cholangiocarcinoma (PHCC) between January 2013 and September 2017 were retrospectively reviewed. Results During the study period, 191 consecutive patients underwent surgical resection of PHCC after ENBD. Of the study patients, 154 (80.6%) patients were discharged, returned to their home, then re‐admitted for surgery. The remaining 37 patients were continuously hospitalized. The number of cholangitis events during the waiting period was 0 in 120 patients, 1 in 59 patients, 2 ≤ in 12 patients. Endoscopic re‐intervention was needed in 52 patients. The median length between the first admission and surgery was 37 days (range 12–197 days) in the entire cohort; it was longer in patients with portal vein embolization than in those without (43 vs. 27 days, P