Feasibility of endoscopic papillary large balloon dilation to remove difficult stones in patients with nondilated distal bile ducts

Figure 3 Large balloon dilation technique. A: Cholangiography demonstrates an impacted stone above a nondilated distal duct in a young patient; B: Balloon dilation at the tapered distal common duct segment with a balloon waist still observed; C: Full dilation up to 15 mm pushing the stone upstream; D: Balloon stone extraction is achieved.