再発膀胱癌に対する無麻酔での経尿道的マイクロ波凝固術の経験

概要

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We have performed transurethral microwave tissue coagulation (MTC) for urinary bladder cancer. Previously, we applied this treatment to small recurrent tumors of outpatients under epidural anesthesia. In this report, we performed MTC for smaller tumors without anesthesia. Eight tumors from 2 mm to 5 mm in diameter, were treated. Six tumors were G1, and 2 tumors were G2. Coagulation time was 5 or 10 seconds, and coagulation was performed once or repeated 2 to 4 times. Five-second coagulation could be performed without pain, but 10-second coagulation caused controllable pain. In 2 cases, recurrent tumors were detected 4 and 6 months later, and this method was performed again. It is supposed that we could easily treat recurrent bladder cancer without anesthesia, which was smaller than 3 mm in diameter.