不可切除的BismuthIll和IV型胆管癌很少有满意的疗法。本文作者研究局部光动力疗法（PDT）的效果。该疗法由两步组成，首先静脉注射一种光致敏物，然后再用适当波长的无热光照明活化此种光致敏化合物，本文目的是评价Pgr对内修复术替代治疗失败的不可切除的Bismuthm和w型第IV期 Unresectable Bismuth Ill and Type IV cholangiocarcinomas rarely have satisfactory therapy. The authors studied the effect of local photodynamic therapy (PDT). The therapy consisted of two steps. First, a photosensitizer was intravenously injected, and then this photosensitizing compound was activated with a non-heating light of the appropriate wavelength. The purpose of this article was to evaluate the unresectable failure of Pgr for internal repair replacement therapy. Bismuthm and w type IV