Abstract

The photodynamic therapy, using Nd: YAG laser, Qswitch and Pheophorbide-a, has tumor-cidal effect against the murine bladder tumor. Pheophorbide-a itself was proved to have little toxicity to the tumor cells. The damage produced with the PDT seems to cause gradual cell death even after the treatment of PDT. It is warranted to investigate further course of this treatment, to clarify how long this effect lasts.