Transurethral microwave radiation for bladder neoplasm]

42 patients with bladder neoplasm were treated effectively by transurethral microwave radiation in our hospital from March, 1990 to October 1991. No serious complication was found after this treatment and its long-term result was better than others. The principle of this method is to use the biological availability of microwave to heat the neoplasm and to evoke the cellular immunity system to kill tumor cells, because tumor cells is more likely to be killed than normal tissue cell by heat. Generally, tumor cells would be killed when the temperature is higher than 42 degrees C. The protection against microwave during the treatment was also discussed.