Definition: Low-density crystals or stones in any part of the URINARY TRACT. Their chemical compositions often include CALCIUM OXALATE, magnesium ammonium phosphate (struvite), CYSTINE, or URIC ACID.
general or unspecified; consider URINARY BLADDER CALCULI; KIDNEY CALCULI; URETERAL CALCULI; chemical composition of calculi: use /chem; /ultrastruct permitted
ExamplesKidney Calculi; Ureteral Calculi; Urinary Bladder Calculi