RESUMEN
Patients with chronic renal failure, generally, sufferred from normocytic normochromic anemia caused by decreased level of erythropoietin. But, secondary erythrocytosis has been reported in patients with several renal diseases; renal artery stenosis or throm- bosis, polycystic kidney disease, bilateral hydronephrosis, etc. We report one case of chronic renal failure combined with polycythemia vera. The case was 32 year-old man whose chief complaints were dyspnea, back pain, itching sensation, headache. 6 month ago, the laboratory examination showed only proteinuria and hematuria without deterioration of renal function. The renal function was aggravated with an accelerated course, and bone marrow examination revealed hypercellularity (erythroid predominance), and renal biopsy showed the finding of the end stage of renal disease which may be originated from IgA nephropathy.