We have been using the flexible cystoscope since 1987. Detailed information is given concerning the technique of flexible cystoscopy, its indications, advantages and disadvantages. A comparison is made with the results obtained using the rigid cystoscope in an initial series of 100 patients, yielding false negative results in only 8% of cases during the learning period. The flexible scope can be successfully employed for Neodymium YAG laser coagulation of superficial bladder tumours. The conclusion is reached that once the urologist has learned how to use it, he will consider the flexible cystoscope as a fundamental tool in his diagnostic armamentarium and false negative results will decrease almost to zero, especially if additional investigations, namely cytology, are routinely adopted.
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