[23] Of 83 patients with CIS, the disease was detected in 80 by HAL cystoscopy and in 64 by white-light cystoscopy. Ninety-seven per cent of lesions were detected by fluorescence cystoscopy ...

I recommend that all patients with high-risk disease undergo pathologic confirmation of response, with cystoscopy, barbotage cytology, and biopsies of the previous tumor sites and areas of CIS ...