Cystolitholapaxy is a minimally invasive surgical procedure that breaks up bladder stones and removes the fragments through your urethra. The name literally translates to “looking into the bladder to crush a stone.” It’s the most common way bladder stones are treated today, with success rates reaching 100% for complete stone clearance in many studies.
How the Procedure Works
The surgeon inserts a cystoscope, a long thin tube with a camera on its tip, through your urethra and into your bladder. The camera sends a live image to a screen, letting the surgeon locate each stone precisely. Once the stones are in view, an energy source is threaded through the scope to break them apart. The most common option is a holmium laser, which creates tiny shockwaves at the stone’s surface. These shockwaves, combined with intense heat, destabilize the stone’s chemical structure and shatter it into small fragments. An alternative is an ultrasonic probe (sometimes called a sonotrode), which vibrates at high frequency to grind stones down. The ultrasonic method has the added benefit of suctioning fragments out as it works, while the laser cannot do this simultaneously.
After the stones are broken into small enough pieces, the surgeon flushes the bladder with fluid to wash the fragments out through the cystoscope. For any stubborn remaining bits, a device called an Ellik evacuator can be attached to suction them out. The procedure is performed under spinal anesthesia while you lie on your back with your legs in stirrups.
Laser vs. Ultrasonic Stone Breaking
The holmium laser is the more effective of the two main technologies. In a comparative study, laser lithotripsy achieved a 100% success rate for bladder stones (25 out of 25 cases), while the ultrasonic probe cleared 85% of bladder stones. Across all urinary stone locations, the laser achieved complete stone destruction in 76% of patients compared to 50% for ultrasound. No stones were found to be completely resistant to the laser, while about 6% of stones resisted the ultrasonic probe entirely.
Average procedure time was slightly shorter with the laser at 42 minutes, compared to 56 minutes for the ultrasonic approach. That said, both methods are well-established, and the choice often depends on what equipment a hospital has available.
Why Bladder Stones Form
Bladder stones develop when urine sits in the bladder too long. The minerals in urine concentrate and crystallize into hard deposits. The three main drivers are incomplete bladder emptying, slow-moving or stagnant urine, and chronic bladder infections. Conditions like an enlarged prostate, nerve damage affecting the bladder, or prior bladder surgery all increase the risk by making it harder to fully empty the bladder each time you urinate.
Who Needs This Procedure
Cystolitholapaxy is recommended when bladder stones cause symptoms like pain during urination, blood in the urine, frequent urination, or difficulty starting a urine stream. The approach your surgeon chooses depends on three main factors: the size and number of stones, the anatomy of your bladder and urethra, and your body size.
The standard transurethral approach (going in through the urethra) works best for stones smaller than about 2 centimeters and when there are fewer than four stones. For larger or more numerous stones, a percutaneous approach may be preferred. This involves making a small incision in the lower abdomen and entering the bladder directly, which removes any limitation on stone size. Both methods achieve 100% stone-free rates at one-month follow-up in clinical studies, and neither typically requires conversion to open surgery.
Open surgery, once the gold standard, has largely fallen out of favor. It requires a longer incision, more days with a catheter, a longer hospital stay, and leaves a more visible scar.
Risks and Complications
Cystolitholapaxy is considered safe, but complications occur in roughly 14% of patients. The most common are:
- Infection: about 4.8% of patients
- Blood in the urine (hematuria): about 3.8%
- Urine leakage from the bladder wall: about 1.9%
- Sepsis (a serious bloodstream infection): about 1.0%
Visible blood in the urine that lasts two or more days is more common with the percutaneous approach and typically resolves with bladder irrigation. Major complications requiring additional surgery are rare in both approaches.
Recovery After the Procedure
Most people stay in the hospital for a few days after cystolitholapaxy, though the transurethral approach tends to mean a shorter stay than the percutaneous route. You’ll have a urinary catheter in place for about one to two days after surgery. Open surgery, by comparison, can require several days before you’re well enough to go home and a longer period with a catheter.
At a follow-up visit around four weeks after surgery, your doctor will typically confirm that no significant stone fragments remain. In studies tracking outcomes at this point, complete clearance rates are consistently at or near 100%. However, if the underlying cause of stone formation (such as incomplete bladder emptying) isn’t addressed, stones can recur over time.