DEFINITION of nephrolithiasis

Condition marked by the presence of renal calculi, abnormal concretions within the kidney, usually of mineral salts. nephrolithiasis refers to the presence of crystalline stones (calculi) within the urinary system (kidneys and ureter). Such renal stones are composed of varying amounts of crystalloid and organic matrix. Ureteric stones almost always originate in the kidney but then pass down into the ureter.


ETYMOLOGY of nephrolithiasis

Greek nephros = kidney + lithos = stone + -iasis = condition


RELATED TERMS to nephrolithiasis



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