Pulmonary calcifications in children on dialysis

Nephron
R DrachmanM Broyer

Abstract

Pulmonary calcifications are known to occur in patients with chronic renal failure. Recently, scintigrams with bone-seeking radionuclides have been used to detect subclinical pulmonary calcium deposits. We studied 18 children on maintenance dialysis without evidence of pulmonary calcification on chest X-ray. Four children (22.2%) had a positive technetium 99m hydroxymethylene diphosphate scan (group 1), and 14 children had a negative scan (group 2). Mean serum aluminum levels were 2.68 +/- 0.30 mumol/l (mean +/- SD) in group 1 as compared to 1.66 +/- 0.72 in group 2 (p less than 0.01). No significant difference was found between the groups with respect to serum levels of calcium, phosphorus, bicarbonate, magnesium and the calcium-phosphorus product as well as parathyroid hormone and vitamin D levels. The patients with pulmonary calcifications were on dialysis a significantly longer time than those of group 2 (62 +/- 15 versus 35.7 +/- 23 months; p less than 0.01). These data show that pulmonary calcification occurs with high frequency in children undergoing long-term dialysis. They seem to be related to high serum aluminum levels. We propose that pulmonary scintigrams with bone-seeking radionuclides be used routinely for the di...Continue Reading

Citations

Nov 1, 1990·Kidney International·D S MillinerB Landing

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