Severe hypercalcemia; as an unusual presenting feature of distal renal tubular acidosis

Abstract

Although nephrocalcinosis is a common finding in patients with distal renal tubular acidosis, the patients are usually normocalcemic. Distal renal tubular acidosis in childhood as a cause of hypercalcemia is very rare. We presented a four month-old infant with distal renal tubular acidosis and hypercalcemia, and reviewed the literature for its pathogenesis. We suggest that distal renal tubular acidosis should also be considered in the assessment of the etiology of hypercalcemia in infancy though it is very rare.