The diagnostic challenge of suspicious or positive malignant urine cytology findings when cystoscopy findings are normal: an outpatient blue-light flexible cystoscopy may solve the problem

To investigate whether outpatient blue-light flexible cystoscopy could solve the diagnostic challenge of positive or suspicious urine cytology findings despite normal white-light flexible cystoscopy results and normal findings on computerized tomography urography, in patients investigated for urothelial cancer.In a multicentre study, a total of 70 examinations were performed with the use of blue-light flexible cystoscopy (photodynamic diagnosis)...