A cystoscopy is a procedure that lets a urologist look directly inside your bladder and urethra using a thin, camera-equipped tube called a cystoscope. The scope is inserted through the urinary opening, and fluid fills the bladder so the doctor can see the lining in detail on a monitor. A straightforward diagnostic cystoscopy typically takes only 5 to 15 minutes, though procedures that involve treatment can take longer.
Why You Might Need One
Most people are referred for a cystoscopy because they have a urinary symptom that imaging or lab tests haven’t fully explained. The most common reasons include blood in your urine, recurring urinary tract infections, urinary incontinence or leaking, painful urination, and difficulty emptying your bladder completely.
Beyond diagnosing symptoms, cystoscopy is used to look for specific conditions: bladder cancer, bladder stones, urethral narrowing (strictures), interstitial cystitis (a chronic bladder pain condition), fistulas in the urinary tract, and enlarged prostate in men. It’s also the standard surveillance tool for people who have already been treated for bladder cancer, since the cancer has a high recurrence rate and needs regular monitoring.
Cystoscopy isn’t just diagnostic. A urologist can pass small instruments through the scope to treat certain problems during the same session, such as removing small bladder tumors or stones.
Flexible vs. Rigid Cystoscopes
There are two types of cystoscopes, and which one your doctor uses depends on the reason for the procedure and your anatomy. A flexible cystoscope bends as it moves through the urethra, while a rigid cystoscope is a straight, solid tube.
For men, the flexible scope is generally preferred. The male urethra is longer and curves as it passes through the prostate, so a bendable instrument causes significantly less discomfort. For women, studies show that both types are equally well tolerated, so either may be used. When the urologist needs to take tissue samples or perform a treatment like tumor removal, a rigid scope is often chosen because it allows larger instruments to pass through and gives the doctor more control.
What Happens During the Procedure
For a standard diagnostic cystoscopy, you’ll lie on your back on an exam table. Women may be positioned with their knees bent and feet in supports. The urologist applies a numbing gel (a local anesthetic) to the urethral opening and, in men, into the urethra itself. This gel needs a few minutes to take effect before the scope is inserted.
Once the area is numb, the lubricated tip of the cystoscope is gently guided into the urethral opening. You’ll feel pressure, and possibly a strong urge to urinate as the scope advances and fluid begins filling your bladder. This sensation is normal. The doctor uses the fluid, typically sterile saline, to expand the bladder walls so the entire lining becomes visible.
In men, the urologist straightens the penis to align the urethra and advances the scope through the prostate area before entering the bladder. You may be asked to relax or bear down slightly, as if you’re trying to urinate, to help the scope pass the sphincter muscle. In women, the path to the bladder is shorter and more direct, so the scope reaches the bladder quickly.
Once inside the bladder, the urologist systematically inspects the lining by rotating the scope, starting at the top of the bladder and working around in a clock-like pattern. The doctor examines the areas where the ureters (tubes from the kidneys) connect to the bladder and the bladder neck where it meets the urethra. The whole inspection is visible on a screen, and the doctor may capture images or video. As the scope is withdrawn, the urethra itself is also examined.
If the cystoscopy involves a treatment, like removing a tumor or taking a biopsy, you’ll typically receive sedation or general anesthesia instead of just local numbing gel. This turns a quick office visit into a short outpatient surgical procedure.
How Accurate Is It?
Cystoscopy is considered the gold standard for evaluating the inside of the bladder, but it isn’t perfect. A prospective video-confirmed study found that cystoscopy has a sensitivity of about 81% and specificity of 73% for detecting bladder tumors. That means it catches the large majority of tumors but can occasionally miss flat or very small lesions. This is one reason urologists combine cystoscopy with urine tests and imaging when evaluating for bladder cancer.
What Recovery Feels Like
After a diagnostic cystoscopy with local anesthesia, you can go home right away. Most people return to normal activities the same day, though you may want to take it easy for the rest of that day if you feel sore.
For the first day or two, it’s common to experience a burning sensation when you urinate, a frequent or urgent need to go, and a small amount of blood in your urine, especially with your first few bathroom trips. These symptoms usually fade within 24 to 48 hours. Drinking extra water during this time helps flush the bladder and dilute your urine, which makes urination less uncomfortable.
If your procedure involved sedation or general anesthesia, recovery takes a bit longer. You’ll spend time in a recovery area until the sedation wears off, and you’ll need someone to drive you home. Mild soreness and urinary symptoms may last a few days rather than just one or two.
Risks and Side Effects
Cystoscopy is a low-risk procedure, but complications can occur. The most common is a urinary tract infection, caused by bacteria being introduced during the scope insertion. Some urologists prescribe a single dose of antibiotics beforehand to reduce this risk, particularly for people prone to UTIs.
Less common complications include bleeding significant enough to be visible for more than a day or two, difficulty urinating due to swelling in the urethra, and, rarely, a small tear or perforation in the bladder or urethral wall. Signs of a problem worth contacting your doctor about include inability to urinate after the procedure, bright red blood or clots in your urine that persist beyond 48 hours, fever, or severe pain in your lower abdomen.
How to Prepare
Preparation for a diagnostic cystoscopy is minimal. You can usually eat and drink normally beforehand unless you’re receiving sedation or general anesthesia, in which case you’ll be asked to fast. Your doctor will want to know about any medications you take, especially blood thinners, since these can increase bleeding. You may also be asked to provide a urine sample before the procedure to check for an existing infection, because an active UTI would typically need treatment before the cystoscopy can proceed.
You don’t need to do any special bowel preparation or stop most routine medications. If antibiotics are recommended, you’ll usually take them shortly before or on the day of the procedure.