title: [Crystalluria].
abstract: The paper considers a clinical role of crystalluria and its relation to urolithiasis. Examination of 185274 cases of symptomless crystalluria in the citizens of Kharkov and Kharkov region revealed oxalic-calcic urinary crystals in 12.2%, urate crystals in 3.6% and phosphate crystals in 1.2% of the examinees. Oxalic-calcic crystalluria in urgent urinary conditions occurs significantly more frequently (25.8%). Crystalluria was studied in 372 nephrolithiasis patients. Urinary crystals were found in 44.0%. The type of the crystals corresponded to chemical composition of the urinary concrements. Oxalic-calcic nephrolithiasis was detected in a younger group of patients (aged 37.3 +/- 1.3). It is suggested to consider crystalluria as microurolithiasis indicating predisposition to lithogenesis in the urinary tract and as a preclinical manifestation of urolithiasis.
authors.forename: F A
authors.initials: FA
authors.lastname: Klepikov
authors.forename: Iu F
authors.initials: IuF
authors.lastname: Tomakh
authors.forename: I M
authors.initials: IM
authors.lastname: Antonian
mesh_terms: D003085:Colic / Q000453:epidemiology / Q000652:urine; D003460:Crystallization; D006801:Humans; D015994:Incidence; D007674:Kidney Diseases / Q000453:epidemiology / Q000652:urine; D014455:Ukraine / Q000453:epidemiology; D014505:Urban Population / Q000706:statistics & numerical data; D014545:Urinary Calculi / Q000737:chemistry / Q000453:epidemiology* / Q000652:urine
vernacular_title: Kristalluriia.