[Clinical significance of urinary calculi analysis]

Base of real metaphylaxis in the renal stone disease are the analysis of stone and the research of the metabolism in blood plasma and urine. The greatest part of the happened stones is classifying in the four groups: oxalate, phosphate, uric acid and cystine. The metaphylaxis by whewellite and weddellite is the same for both species, but there is a distinction in growth and recurrence. In the phosphate stones, the section with the most different composition, a therapy postoperatively is only possible with the distinction in "acid" and "alkaline" stones. The uric acid and cystine stones need a tight supervision and metaphylaxis for all the life. On the basis of 1200 analyses with X-ray diffraction the difference of the renal stones is discussed and the deduction for a real metaphylaxis is shown.