Hypercalciuria and Nephrocalcinosis, a Feature of Wilson’s Disease

Abstract

Hypercalciuria and nephrocalcinosis are not uncommon in patients with Wilson's disease but have only once been reported as the presenting sign. We diagnosed Wilson's disease in a 17-year-old male patient 6 years after his first episode of gross hematuria and 2 years after detection of hypercalciuria and nephrocalcinosis. Therapy with penicillamine resulted only in a moderate reduction of urinary calcium excretion but oxalate excretion increased.