Advances in endoscopic retrograde cholangiopancreatography for the treatment of cholangiocarcinoma

Figure 3 Photosensitivity following photodynamic therapy. A patient with unresectable cholangiocarcinoma was treated with photodynamic therapy. After 4 wk, a test dose of 10 min of exposure to direct sunlight on small areas of uncovered skin resulted in moderate burns on hands (A) and forearms (B, C). Two additional weeks of avoidance to even indirect sunlight was required.