Children can form stones in the kidneys, ureters or bladder just as adults do, although it is less common. The difference is that a child with a stone is much more likely to have an underlying reason, such as a metabolic tendency or an anatomical problem in the urinary tract, and much more likely to form another one.
For that reason care has two parts: dealing with the stone that is there, and finding out why it formed. Both belong with a paediatric urologist and a paediatric nephrologist working together.
Symptoms
- Tummy or flank pain, which in small children may be vague and hard to localise
- Blood in the urine, visible or found on a dipstick
- Repeated urinary infections
- Nausea and vomiting with bouts of pain
- Pain or crying on passing urine, or needing to go very often
- Irritability and poor feeding in infants
- No symptoms, with the stone found on a scan done for another reason
Causes and risk factors
About half of children with stones have a measurable metabolic factor: too much calcium in the urine, too little citrate, or less often raised oxalate, uric acid or cystine. Cystinuria and primary hyperoxaluria are inherited and tend to cause early, recurrent stones. Low fluid intake and a salty diet add to the risk. Structural problems such as a blockage at the kidney outlet, reflux or a neurogenic bladder allow urine to stagnate and become infected, which encourages infection stones. Some medicines, prolonged immobility and prematurity treated with diuretics are other recognised causes.
How it is diagnosed
- Ultrasound: The first test in children because it uses no radiation. It shows most kidney stones and any swelling of the kidney.
- Low dose CT: Reserved for cases where ultrasound cannot explain the symptoms or precise planning is needed before surgery.
- Urine tests and culture: Look for blood, crystals and infection.
- 24 hour urine or spot urine chemistry: Measures calcium, citrate, oxalate, uric acid and cystine to find the metabolic cause.
- Stone analysis: Any stone passed or removed should be analysed, since its composition directs prevention.
- Blood tests: Kidney function, calcium, phosphate, uric acid and bicarbonate.
Treatment options
- Fluids and watchful waiting: Small stones often pass on their own, and children's ureters pass fragments surprisingly well. Pain control and hydration are the mainstay.
- Shock wave lithotripsy: Breaks kidney stones from outside the body. In children it is done under general anaesthetic and works well for stones under about 2 cm.
- Ureteroscopy with laser: A fine scope passed up the urinary passage fragments stones in the ureter or kidney. Miniature instruments are made for children.
- Mini percutaneous nephrolithotomy: Keyhole removal through the back for large or branching stones.
- Correcting anatomy: A blocked kidney outlet or reflux may need repair so that stones do not return.
- Prevention: Generous water intake, less salt, normal dietary calcium, and where indicated potassium citrate or condition specific medicines.
When it is urgent
Take your child to a local emergency department for fever with flank pain, vomiting that prevents drinking, severe pain that does not settle, or very little urine. A blocked and infected kidney is an emergency that needs drainage the same day. Do not travel with a child in this state.
Travelling to Türkiye for treatment
A stable, non-obstructing stone that needs a planned procedure is a reasonable reason to travel, provided the centre has paediatric anaesthesia and child-sized endoscopic equipment; ask about both. Plan about 5 to 8 days for ureteroscopy, and remember a temporary stent may need removal before you fly home or by your local team. The metabolic work-up and years of prevention and ultrasound follow-up should stay with your child's own doctors.
Send your reports, scans and a short history and a Clinic-Y coordinator replies within 24 hours with suitable teams and written, all-inclusive proposals side by side. Reviewing your case is free.
الأسئلة المتكررة
Will my child get stones again?
Recurrence is common, particularly when a metabolic cause is present. That is why the urine work-up matters as much as removing the stone.
Should we cut out calcium?
No. Restricting calcium can harm growing bones and may actually raise oxalate absorption. Less salt and more water help more.
Is lithotripsy safe for a growing kidney?
Long-term studies have not shown lasting harm to kidney growth or function when modern machines and sensible energy limits are used.
How much should my child drink?
Your doctor will set a target by age and weight. A practical sign is pale urine throughout the day.