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A, Stent removal through the overtube. B, Single-operator cholangioscope being advanced over the guidewire directly into the overtube. C, Cholangioscope in bile duct. D, Cholangioscopic view of a large bile duct stone during laser lithotripsy. E, Cholangiography demonstrating complete stone fragmentation after lithotripsy. F, Follow-up cholangiogram showing that no filling defects are seen.
