A case of intrarenal artery stenosis associated with erythrocytosis

A case of erythrocytosis with increased plasma erythropoietin level was reported. Peripheral leucocytes and thrombocytes were normal. No splenomegaly was detected. Studies to find underlying disorders causing increased plasma erythropoietin level and erythrocytosis revealed no abnormalities except for the thickened and tortuous interlobular and afferent arteries in the kidney. This change was suggested as the cause of erythrocytosis found in this case.