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[Intracavitary whole bladder mucosal irradiation using a remote controlled afterloading system in bladder tumors. Treatment procedure and preliminary report].

A new intracavitary whole bladder mucosal irradiation procedure has been introduced for multiple, recurrent tumors, or carcinoma in situ of the urinary bladder. Using a remote controllled afterloading unit and a specially designed applicator constructed with a balloon catheter and a loading tube, a sufficient dose can be delivered evenly to the bladder mucosa. The technique of the intracavitary whole bladder mucosal irradiation and the preliminary results are described. Nineteen patients with recurrent or multiple bladder tumors have been treated by this procedure. Most patients tolerated the procedure without any difficulties. No morbidity and no mortality were noted. Nine of 10 patients with 6 months or more of follow up term had no recurrence. Intracavitary whole bladder mucosal irradiation would be superior method as the treatment of recurrent or multiple superficial bladder cancer, including carcinoma in situ, which are uncontrolled by other conservative measures. Further data, including longer follow up, are needed to define the potentially promising role of this procedure.