Abstract
Dialysate eosinophilia was noted in three patients undergoing peritoneal dialysis. In all cases, this eosinophilia was asymptomatic, and the process resolved spontaneously after two to seven weeks. In two cases, dialysate IgE levels were measured and were not elevated. In the third case, a transient episode of antibiotic-responsive, culture-negative peritonitis resulted in temporary disappearance of eosinophils from the peritoneum. Idiopathic peritoneal dialysate eosinophilia is an apparently benign entity, which may arise via mechanisms distinct from those involved in infectious peritonitis. It does not seem that IgE, a potent eosinophilotactic agent, necessarily is involved in the development of this disorder.
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