McMaster University

McMaster University

Pediatric Stone Clinic

Headed by Dr. Vladimir Belostotsky, the Pediatric Stone Clinic at McMaster Children’s Hospital in Hamilton, Ontario cares for children and adolescents who are affected by kidney stones – small, hard deposits of salts – that can block the drainage of urine and cause pain.

Our team, consisting of a Pediatric Nephrologist, a Nephrology Clinic Nurse and a Pediatric Kidney Dietitian, work with kids and their families to establish the cause of stone formations and provide advice and strategies to help reduce the risk of future stones, and/or preventing existing stones from growing.

What Are Kidney Stones?

Kidney stones are actually a real stone that forms and stays in the kidney. The stones are usually small, only a few millimetres, but can grow as large as several centimeters.

Crystals (sand, gravel) appear when waste salts can’t dissolve in urine. Sometimes crystals don’t cause any problems; sometimes they stick together and make a stone.

Kidney stones are much more common in adults. Unfortunately, they can also affect children, which now happens more frequently than it did 20 years ago. This may be partly related to the amount of table salt in our modern diet.

Not all kindey stones are the same. There are five main types of stones and several different mixtures and varieties. It is important to establish what the stones are made of, as different types of stones require different treatments.

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