The main objective of the study is to assess in patients with compensated alcoholic cirrhosis and HIO, as assessed by MRI, the effect of phlebotomy in order to lower and maintain serum ferritin below 50 µg / l on the risk of HCC occurrence. The effect of bloodletting will be jointly evaluated on 1) episodes of hepatic decompensation, 2) non HCC liver-related mortality 3) changes in HIO during follow-up.