Daneshmand S, et al. - Researchers comparatively analyzed the blue light flexible cystoscopy (BLFC) with white light flexible cystoscopy (WLFC) in the detection of bladder cancer during surveillance. A marked improvement was yielded in the detection of patients with recurrent bladder cancer through office-based blue light flexible cystoscopy. This method was discovered to be safe when used for surveillance. Blue light cystoscopy in the operating room (OR) resulted in a prominent improvement in terms of the detection of CIS. It identified the lesions that were missed with white light cystoscopy (WLC).