Erythrocytes associated with idiopathic membranous glomerulopathy.

Erythrocytosis has been observed in association with a number of renal diseases. We report for the first time the occurrence of true erythrocytosis in a patient with nephrotic syndrome due to idiopathic membranous glomerulopathy. Serum erythropoietin activity was found to be normal. The mechanism responsible for the erythrocytosis of renal parenchymal disease remains to be elucidated.