[Erythrocytosis and renal adenocarcinoma]

Contribution of one left renal adenocarcinoma in a 54-year old women, where the initial data was the finding of erythrocytosis discovered during routine laboratory tests performed by her gynaecologist. Review of the diagnostic and therapeutic procedures followed in this case, establishing a differentiation between erythrocytosis and polyglobulia. Normalization of the hemogram following extended nephrectomy is emphasized. This case history is considered to be of interest due to its presentation pattern. Finally, we believe that faced to an erythrocytosis of unknown etiology, a renal tumoral disease, more specifically a renal adenocarcinoma, should be suspected.