[Urinary lithiasis: between metabolism and dietetics]

Prevalence and incidence of urinary lithiasis are increasing in western countries. Oxalocalcic stone is the major form of urinary calculi but other forms are not unusual. Caracteristics of the collected stone may improve the diagnosis investigations. Rationnal blood and urine examinations are essential for this medical managment. Most of the various metabolic abnormalities in cause can be corrected from specific dietary measures.