Cystoscopy Home A-Z Health Information Health Library A-Z Cystoscopy Overview A cystoscopy examines the lining of the bladder and urethra (the tube through which urine exits the body). It is used to diagnose, monitor, and treat a number of urinary conditions. Features It can be done a simple outpatient procedure, which takes between 5–15 minutesThe procedure can also be performed in a hospital under sedation or general anaesthesia. In these cases it takes around 15–30 minutes Treatments and Procedures Cystoscopy can be used for the following:Investigation of underlying causes for certain urinary symptomsDiagnosis and treatment of bladder diseases and conditionsDiagnosis of prostate enlargement