Kidney stones form when substances in the urine crystallise. They can go unnoticed or cause renal colic, a very intense pain.
When to see a doctor
- Sudden pain in the back or side, spreading to the groin
- Blood in the urine
- Nausea or vomiting with the pain
- Fever with side pain: this is an emergency
Tests
- Kidney ultrasound
- Non-contrast CT scan
- Urine test
- Analysis of the passed stone
Treatment
- Pain relief and medication to help pass the stone
- Breaking up or removing the stone, depending on its size and position
- Check-up and advice to prevent new stones (fluids, diet)
Kidney stones in Brussels: where to be seen
Dr Ayhan Bakar, urologist and andrologist, sees patients at Sainte-Anne Saint-Rémi hospital in Anderlecht (Monday, Wednesday, Thursday and Friday) and at the Basilique clinic in Ganshoren (Tuesday afternoon). Both hospitals are part of the CHIREC group.
Consultations in French and English, no referral letter needed. See addresses and opening hours
This information is general and does not replace a consultation. In an emergency, call 112.
Published by Dr Ayhan Bakar, urologist in Brussels (INAMI 17718534450). Last updated: October 2026.