Cystourethroscopy; Endoscopy of the bladder
Cystoscopy is a surgical procedure. This is done to see the inside of the bladder and urethra using a thin, lighted tube.
How the Test is Performed
Cystoscopy is done with a cystoscope. This is a special tube with a small camera on the end (endoscope). There are two types of cystoscopes:
- Standard, rigid cystoscope
- Flexible cystoscope
The tube can be inserted in different ways. However, the test is the same. The type of cystoscope your health care provider will use depends on the purpose of the exam.
The procedure will take about 5 to 20 minutes. The urethra is cleansed. A numbing medicine is applied to the skin lining the inside of the urethra. This is done without needles. The scope is then inserted through the urethra into the bladder.
Water or salt water (saline) flows through the tube to fill the bladder. As this occurs, you may be asked to describe the feeling. Your answer will give some information about your condition.
As fluid fills the bladder, it stretches the bladder wall. This lets your provider see the entire bladder wall. You will feel the need to urinate when the bladder is full. However, the bladder must stay full until the exam is finished.
If any tissue looks abnormal, a small sample can be taken (biopsy) through the tube. This sample will be sent to a lab to be tested.
How to Prepare for the Test
Ask your provider if you should stop taking any medicines that could thin your blood.
The procedure may be done under anesthesia in a hospital or surgery center. In that case, you will need to have someone take you home afterward.
How the Test will Feel
You may feel slight discomfort when the tube is passed through the urethra into the bladder. You will feel an uncomfortable, strong need to urinate when your bladder is full.
You may feel a quick pinch if a biopsy is taken. After the tube is removed, the urethra may be sore. You may have blood in the urine and a burning sensation during urination for a day or two.
Why the Test is Performed
The bladder wall should look smooth. The bladder should be of normal size, shape, and position. There should be no blockages, growths, or stones.
What Abnormal Results Mean
The abnormal results could indicate:
- Bladder cancer
- Bladder stones (calculi)
- Bladder wall decompression
- Chronic urethritis or cystitis
- Scarring of the urethra (called a stricture)
- Congenital (present at birth) abnormality
- Diverticula of the bladder or urethra
- Foreign material in the bladder or urethra
Some other possible diagnoses may be:
There is a slight risk for excess bleeding when a biopsy is taken.
Other risks include:
- Bladder infection
- Rupture of the bladder wall
Drink 4 to 6 glasses of water per day after the procedure.
You may notice a small amount of blood in your urine after this procedure. If the bleeding continues after you urinate 3 times, contact your provider.
Contact your provider if you develop any of these signs of infection:
- Reduced urine output
Duty BD, Conlin MJ. Principles of urologic endoscopy. In: Partin AW, Dmochowski RR, Kavoussi LR, Peters CA, eds. Campbell-Walsh-Wein Urology. 12th ed. Philadelphia, PA: Elsevier; 2021:chap 13.
National Institute of Diabetes and Digestive and Kidney Diseases website. Cystoscopy & ureteroscopy.
Taylor JM, Smith TG, Coburn M. Urologic surgery. In: Townsend CM Jr, Beauchamp RD, Evers BM, Mattox KL, eds. Sabiston Textbook of Surgery. 21st ed. Philadelphia, PA: Elsevier; 2022:chap 74.
Last reviewed on: 4/10/2022
Reviewed by: Kelly L. Stratton, MD, FACS, Associate Professor, Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.