STUDY ON CALCIUM-OXALATE MONOHYDRATE RENAL UROLITHS .1. QUALITATIVE PROPERTIES

Shape, colour, surface features and external appearance were determine d from 33 human uroliths composed predominantly of calcium oxalate mon ohydrate (COM). Based on these properties COM renal stones were classi fied into mulberry (M) and spheroid (S) type, each of which was furthe r divided into two well defined subtypes, M1-fused globules, M2-loose globules, S1-corrugated surface and S2-even surface. This classificati on indicates that only specific combinations of external characteristi cs could occur on COM renal uroliths. No apparent correlation between the stone type and respective biochemical urinary data transpired from available information.