Diagnostic problems associated with cystinuria.

Abstract

To elucidate the role of the urinary cystine concentration for the formation of urinary stones, 190 stone-formers were evaluated in this prospective study. Seven patients (3.8%) were heterozygous and one patient (0.5%) was homozygous for cystinuria; only two (1%) of them were cystine stone-formers. Two patients with calcium stones were heterozygous for cystinuria. This study confirms the observation that elevated concentrations of urine cystine are relatively infrequent among patients with urinary stones.

• Authors: M Ala-Opas, I Sipilä, S Kivinen, T Lehtonen
• Journal: Scandinavian journal of urology and nephrology (Scand J Urol Nephrol) Vol. 24 Issue 2 Pg. 133-5 ( 1990) ISSN: 0036-5599 [Print] England
• PMID: 2356452 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Topics

• Adult
• Aged
• Cystinuria (diagnosis, epidemiology)
• Female
• Finland (epidemiology)
• Humans
• Incidence
• Male
• Middle Aged
• Prospective Studies
• Urinary Calculi (epidemiology)