Fig. 2. Peroral cholangioscopy-guided photodynamic therapy by using the SpyGlass digital system. (A) Cholangiogram shows a stricture of the proximal common bile duct. (B, C) Cholangioscopic images show a stricture with irregular tortuous vessels at the site of the proximal biliary stricture. (D) Cholangiogram shows the photodynamic therapy catheter placed across the neoplastic stricture. (E) Cholangioscopic appearance during lighting. (F) Cholangioscopic view 2 weeks after photodynamic therapy reveals diffuse necrosis and improvement of stricture.

Int J Gastrointest Interv 2021;10:101~105 https://doi.org/10.18528/ijgii210039

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