Premium Photo | A paper model of a human kidney with sand and stone a stethoscope and a jar with urine tests
MedicTests.com - Nephrolithiasis (Kidney Stones) Kidney stones are clumps of crystals that form in the kidneys. They may be as small as a grain of sand or, in rare instances, become as
IASIS Hospital - Some kidney stones are as small as a grain of sand. Others are as large as a pebble. A few are as large as a golf ball! As a
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