Abstract
Peroral cholangioscopy with duodenoscopic assistance can allow direct visualization of the bile duct. Several clinical studies suggest the utility of peroral cholangioscopy for the management of various bile duct lesions. Although direct visual observation may be a useful adjunct to endoscopic retro-grade cholangiopancreatography (ERCP) for distinguishing malignant from benign bile duct lesions, the assessment of diagnostic accuracy needs further controlled clinical studies. Intracorporeal lithotripsy with the use of a peroral cholangioscope may be a safe and effective method for difficult-to-treat bile duct stones, including intrahepatic stones. At present, however, the fragility of the fiberscope equipment and technical difficulties hold back its popularity. Preliminary data obtained by using a new videoscope, which provides excellent quality images, are encouraging. Furthermore, it is expected that this videoscope will have longer durability of optical images and better manipulation than previous fiberscopes.
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