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Kidney Stones

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Kidney Stones Definition

Definition

Kidney stones are pieces of a stone or crystal-like material. These stones form inside the kidneys or urinary tract. The kidneys remove waste (in the form of urine) from the body. They also balance the water and electrolyte content in the blood by filtering salt and water.

There are several types of kidney stones:

  • Most common type has mostly calcium along with phosphate or oxalate.
  • Others types contain uric acid, struvite, and/or cystine.

Kidney Stone

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