[Topographic phase analysis of urinary concrements using crystal-optic methods].

In the present paper was reported on the results of the topographic crystal-optic analysis of urinary calculi of 560 concrements. 59% of all urinary calculi had a different phase content in the nucleus and in the calyx. All frequent minerals of the urinary calculi could be proved in the nucleus of the calculus. It could be shown that nucleus and calyx may have a monomineral as well as a polymineral structure. It is referred to the importance of the topographic analysis of the urinary calculi for the metaphylaxis of the urolithiasis.