Bladder Stones Due to Enlarged Prostate
An enlarged prostate can contribute to bladder stones by causing poor bladder emptying and urinary stasis, especially when post-void residual urine is high. Bladder stones may cause burning, frequent urination, interrupted urine flow, lower abdominal pain, recurrent infection or visible blood in urine. Treatment usually removes the stone endoscopically, but it is equally important to identify why the stone formed. In men over 40, benign prostate obstruction is common, yet not every bladder stone is caused by BPH and not every patient automatically needs prostate surgery. The decision depends on residual urine, uroflowmetry, prostate obstruction, bladder strength and the chance of recurrence.
Why can BPH lead to bladder stones?
When urine remains in the bladder after voiding, minerals can crystallise around debris, infection or a small migrated kidney stone. Repeated urinary stasis makes growth more likely. Long-standing obstruction can also create diverticula where urine pools.
Common symptoms
- Burning or pain while passing urine.
- Frequent urination or sudden urgency.
- Stop-start urine flow.
- Lower abdominal or penile-tip discomfort.
- Visible blood in urine.
- Recurrent urinary infection.
- Difficulty emptying or episodes of retention.
- Sometimes no symptoms, with stones found on ultrasound.
How are bladder stones diagnosed?
Ultrasound can detect many bladder stones and simultaneously assess prostate size and post-void residual urine. CT and cystoscopy are more sensitive when the diagnosis is uncertain or additional urinary disease is suspected.
The EAU bladder stone guideline recommends investigating the underlying cause with examination, uroflowmetry, residual urine, urinalysis/culture and metabolic tests where appropriate.
Does a bladder stone prove prostate obstruction?
No. Urodynamic studies show that some older men with bladder stones do not have true bladder outlet obstruction; detrusor underactivity and overactive bladder can also be present. A high residual, poor flow and obstructive prostate anatomy make BPH more likely to be clinically important.
How are bladder stones removed?
Endoscopic cystolithotripsy / cystolitholapaxy
A telescope is passed through the urethra and the stone is fragmented with laser, pneumatic or ultrasonic energy and removed. This is the commonest approach in adults when anatomy permits.
Percutaneous or open removal
Very large stones, urethral limitations or unusual anatomy may require a suprapubic/percutaneous approach or, rarely, open removal.
Should prostate surgery be done at the same time?
Sometimes. If there is clear benign prostate obstruction, high residual urine, repeated retention or other complications, the stone can often be removed during the same anaesthetic as TURP, HoLEP or another outlet procedure. In selected men with modest obstruction, stone removal followed by medical treatment and surveillance can be reasonable. The goal is to treat the cause sufficiently to reduce recurrence without operating more than necessary.
Which prostate operation may be chosen?
- TURP for an appropriately sized obstructing prostate.
- HoLEP for small to very large glands when enucleation expertise is available.
- Other laser or bipolar procedures depending on anatomy and bleeding risk.
- A minimally invasive therapy may be less suitable when a bladder stone already signals significant obstruction or poor emptying.
Can bladder stones come back?
Yes, particularly if the underlying emptying problem remains. Reducing residual urine, treating infection, correcting outlet obstruction when needed and analysing the stone in first-time formers help lower recurrence risk.
Emergency warning signs
- Complete urinary retention.
- Fever or chills with obstruction or infection.
- Heavy blood in urine or clots preventing drainage.
- Severe lower abdominal pain with inability to empty.
- Vomiting or systemic illness with urinary infection.
What to bring for consultation
- Ultrasound or CT images/report.
- Uroflowmetry and residual urine.
- Urine routine/culture.
- Serum creatinine.
- History of kidney or bladder stones.
- Prostate medicines and previous catheter/prostate procedures.
FAQs
Can medicines dissolve bladder stones caused by BPH?
Most adult bladder stones need mechanical removal. Certain uric-acid stones may sometimes be dissolved by urine alkalinisation under specialist supervision, but the emptying problem still needs evaluation.
Do I always need TURP if I have a bladder stone?
No. The EAU notes that not every man with a bladder stone has proven outlet obstruction. The need for prostate surgery depends on obstruction, residual urine, bladder function and recurrence risk.
Can HoLEP and bladder stone removal be done together?
Yes, in suitable patients both can often be treated during the same anaesthetic.
Can a kidney stone fall into the bladder and become a bladder stone?
Yes. A stone can migrate from the upper urinary tract and then enlarge if it is not passed, particularly when bladder emptying is poor.
Will removing the prostate obstruction prevent every future bladder stone?
It lowers the risk when obstruction is the main cause, but infection, metabolic factors, foreign material and other bladder problems can still cause stones.
Related reading
- Can Enlarged Prostate Damage the Bladder or Kidneys?
- Repeated Urine Retention Due to Enlarged Prostate
- Post-Void Residual Urine: How Much Urine Left in the Bladder Is Normal?
- Which Prostate Surgery Is Best for Me? TURP, HoLEP or Other Options
- Urologist in Latur
References
- European Association of Urology. EAU Guidelines on Urolithiasis: Bladder Stones, 2026 https://uroweb.org/guidelines/urolithiasis/chapter/bladder-stones
- European Association of Urology. EAU Guidelines on the Management of Non-neurogenic Male LUTS: Disease Management, 2026 https://uroweb.org/guidelines/management-of-non-neurogenic-male-luts/chapter/disease-management
- American Urological Association. Management of Lower Urinary Tract Symptoms Attributed to Benign Prostatic Hyperplasia Guideline https://www.auanet.org/guidelines-and-quality/guidelines/bph-guideline