Context
Many patients with unresectable pancreatic and peripancreatic cancer require treatment for malignant biliary obstruction. We performed a meta-analysis of randomized trials comparing immediate biliary stent placement and immediate surgical biliary bypass in patients with unresectable pancreatic and peripancreatic cancer.
Objectives
To conduct a meta-analysis of the English language literature (1985 through 2011) comparing those two treatments and analyze hospital utilization patterns.
Methods
After identifying five randomized controlled trials comparing immediate biliary stent placement and immediate surgical biliary bypass, we performed a meta-analysis for dichotomous outcomes, using a random effects model. We compared resource utilization in terms of the number of hospital days before death, by reviewing high-quality literature.
Results
379 patients were identified. We found no statistically significant differences in success rates between the two treatments (risk ratio [RR], 0.99; 95% confidence interval [CI], 0.93 to 1.05, P = 0.67). Major complications and mortality were not significantly higher after surgical bypass (RR, 1.54; 95% CI, 0.87 to 2.71; P = 0.14). Recurrent biliary obstruction was significantly less frequent after surgical bypass than after stent placement (RR, 0.14; 95% CI, 0.03–0.63; P < 0.01). Despite similar overall survival rates, longer survival was associated with more hospital days before death in stent patients than in surgical patients.
Conclusions
Nearly all patients with unresectable pancreatic cancer benefit from some procedure to manage biliary obstruction. Patients with low surgical risk may benefit more from surgery because the risk of recurrence and subsequent hospital utilization are much lower than for stent patients.