The choledochoscopic and histopathological grading of choledochitis.

The choledochoscopic photographs of 91 and 119 patients with cholecystolithiasis and choledocholithiasis respectively were reviewed on the basis of endoscopic grading. By analogy with the system of the grading, the diseases were also divided into four histopathological gradings. Choledochoscopy provides an alternative approach to the diagnosis of choledochitis, which is also corroborated by the histopathological data in calculous diseases.