Treatment of benign biliary strictures in chronic pancreatitis by self-expandable metal stents

AIM: To determine the efficacy the value of self-expandable metal stents in patients with benign biliary strictures caused by chronic pancreatitis. METHOD: 61 patients with symptomatic common bile duct strictures caused by alcoholic chronic pancreatitis were treated by interventional endoscopy. RESULTS: Initial endoscopic drainage was successful in all cases, with complete resolution of obstructive jaundice. Of 45 patients who needed definitive therapy after a 12-months interval of interventional endoscopy, 12 patients were treated with repeated plastic stent insertion (19.7%) or by surgery (n = 30; 49.2%). In 3 patients a self-expandable metal stent was inserted into the common bile duct (4.9%). In patients treated with metal stents, no symptoms of biliary obstruction occurred during a mean follow-up period of 37 (range 18-53) months. The long-term success rate of treatment with metal stents was 100%. CONCLUSIONS: Endoscopic drainage of biliary obstruction by self-expandable metal stents provides excellent long-term results. To identify patients who benefit most from self-expandable metal stent insertion, further, prospective randomized studies are necessary.