Large balloon dilatation following endoscopic sphincterotomy using a balloon enteroscope for the bile duct stone extractions in patients with Roux-en-Y anastomosis.

摘要

BACKGROUND: Extraction of bile duct stones in patients who have undergone Roux-en-Y anastomosis can be challenging. Recently, large balloon dilation following endoscopic sphincterotomy has been shown to be useful for the removal of bile duct stones. AIM: We retrospectively evaluated the feasibility and safety of endoscopic sphincterotomy large balloon dilation for the removal of bile duct stones in patients with Roux-en-Y anastomosis. METHODS: Large balloon papillary dilation following EST for the removal of bile duct stones was performed on the intact papilla in 15 patients with Roux-en-Y anastomosis at our institution. When we could not use the long-type accessories, a conventional forward-viewing upper endoscope passed through the over tube of the single-balloon or double-balloon enteroscope for the use of short-type accessories. Following endoscopic sphincterotomy, a large balloon catheter was positioned across the main duodenal papilla. The size of large balloon used ranged from 15mm to 20mm. RESULTS: Complete clearance of bile duct stones was achieved in all cases in the initial session without any adverse events. A mechanical lithotriptor for crushing stones was used in one patient (6.7%). CONCLUSION: Large balloon papillary dilation following EST appears to be an effective and safe treatment for difficult-to-remove bile duct stones in patients with Roux-en-Y anastomosis .