The light microscope was used to observe the hesion from gums of teeth and focus of infection.

以消毒牙签取受检者口腔齿龈上或病灶表面附着物，生理盐水涂片，光学显微镜下观察。

Conclusions The key to prevent recurrent angiocholitis and reduce the reoperation rate is to relieve biliary tract stricture, remove the focus of infection and provide unobstructed bile duct drainage.

结论解除胆道狭窄，去除病灶，通畅引流是预防胆管炎复发，减少再手术率的关键。