title: [Potassium urate in urinary tract calculi].
abstract: In a study of renal calculi, performed with scanning electronic microscope, Edax, element mapping and semiquantitative analysis with a Nova 2 computer, we have found, among the urates, ratios K/Na from 0.016, in the almost pure monosodium urate stones, to 1.856 in other areas. The presence of monopotassium urate has, to our knowledge, no previous reference in the literature on human lithiasis.
mesh_terms: D004577:Electron Probe Microanalysis; D006801:Humans; D008855:Microscopy, Electron, Scanning; D014527:Uric Acid / Q000032:analysis*; D014545:Urinary Calculi / Q000378:metabolism*
chemical_list: D014527:Uric Acid
vernacular_title: Urato potásico en los cálculos del aparato urinario.