[Problems of the preservation treatment of vesical function of bladder cancer].

Prognosis of the recurrent cases which broke out after the preservation treatment of the vesical function as a first treatment tend to be worse in comparison with the primary cases. Especially the partial cystectomy has this tendency. Preservation treatment of the vesical function can be applied to the low stage, however, the application of this treatment to the tumor which is indicative of the invasive cancer is very difficult. From the long term observation type 1 (bush type) by the endoscopic classification did not worsen in a recurrence after the treatment with preservation of the vesical function. A repetition of the preservation treatment of the vesical function for a intravesical recurrence will incur a danger that a tumor will be getting worse even if it is low grade or low stage.