To the Editor: Primary hyperoxaluria type 1 is a rare inheriteddisease leading to recurrent nephrolithiasis, nephrocalcinosis,systemic oxalosis, and renal failure, ultimately requiring combinedkidney and liver transplantation.1,2 Because of the rarity ofthis disorder, the diagnosis is often missed or delayed by severalyears, especially when the disease first manifests in adulthood,thus depriving patients of the benefits of therapeutic measuresthat have been instituted in a timely manner.2,3 Therefore,any method allowing early diagnosis is eagerly awaited.4 However,although nephrolithiasis is the revealing symptom in the greatmajority of patients with this disease at any age, until . . . [Full Text of this Article]
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