Abstract

  A transurethral bladder tumor en-bloc resection (transurethral resection of a bladder tumor in one piece : TURBO) is characterized by the removed of a bladder tumor as a single piece, without carrying out fragmentation of the tumor. A more exact pathological diagnosis is possible using TURBO. I herein report the usefulness of this treatment with regard to the oncological results and pathological diagnosis.
  An analysis of 135 cases of bladder tumors and 173 lesions treated with TURBO was carried out. The resection was carried out in the order of 1. marking, 2. mucous membrane incision, 3. horizontal excision and 4. tumor removal. The resection of the tumor was possible inside any part of the bladder, and the complication rate was within the allowable range. The majority of cases (123 ; 91.1%) contained a muscle layer in the excision sample.
  Lamina muscularis mucosae were observed in 22 of 23 pT1 examples (95.7%). Although the T1 case which did not exceed the lamina muscularis mucosae did not advance, four of seven cases had stage progression, which included invasion exceeding the lamina muscularis mucosae, and upper urinary tract recurrence was seen in one patient. The diagnosis of the depth of invasion by TURBO was accurate, and the existence of muscularis mucosae invasion was suggested to correlate with the prognosis.