Between June 1976-Aug. 1979, 302 bladder tumors up to a tip-of-thumb-size were treated by Neodymium-YAG[yttrium-aluminum-garnet]-laser. Larger bladder tumors (196) were removed by transurethral resection combined with laser irradiation 1 wk later. All tumors were pTA to pT3a, NO, MO. Two months after treatment local recurrence was found in 9% following use of the rigid laser endoscopes. The local recurrence rate was only 1% using laser endoscope with modified Albarran insert. In patients with small, multiple and flat bladder tumors the Neodymium-YAG-laser application is an effective and gentle procedure.