What are kidney stones?

Also known as: nephrolithiasis.

A kidney stone is a solid, hard, pebble-like object that forms in a child’s kidneys when normal urine substances (like calcium, oxalates, magnesium, and phosphorus) become very concentrated.

There are 4 main types of kidney stones; those containing primarily calcium, cysteine, uric acid or struvite.

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Reviewed by: Jack Wolfsdorf, MD, FAAP

This page was last updated on: 1/29/2019 3:21:13 PM