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

Figure 1 Large balloon dilation in a patient with tapered distal duct. A: A 60-year-old female patient with a nondilated distal common duct; B: Large balloon dilation of the distal duct; C: Full dilation to 15 mm was performed; D: Stone retrieval without intracorporeal or mechanical lithotripsy was allowed by this technique.