Rare Diseases Symptoms Automatic Extraction

[The total absence of xanthine oxidase activity. Apropos 2 cases of the nonfamilial incidence of xanthinuria].

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The lack of activity of the xanthine-oxidase conversion produces hypouricemia and hypocuria, with high urine elimination of xanthine and hypoxanthine. Due to the low solubility, it can result in urinary lithiasis. Two rare cases of xanthinuria caused by total lack of xanthine-oxidase are presented. A differential diagnosis of several congenital metabolic purine defects was carried out.