LASER CHOLANGIOSCOPY: THE EFFECT OF CHOLANGIOSCOPIC LASER IRRADIATION ON GALL BLADDER MUCOSA

Abstract

Yag Medical 100 (ALM) was applied for this study. We investigated the effect of cholangioscopic irradiation on resected human gall bladder mucosa and dog's gall bladder mucosa. This study was summarized as follows. 1. Yag Medical 100 can be used safely in the bile duct according to our method without gas jet flow system. 2. In the case of internal irradiation on the gall bladder, although the histological changes were only minimal at the mucosa but severe at the submucosal tissue, on which care must be taken. 3. At irradiation for points of erosion, bleeding, and/or blackened by dye, the change of the tissue is fast and severe. The difference depending on color is useful for clinical application.