 Treatment of induction with the simultaneous administration of ATRA 45 mgm2 day until the RC and idarubicine 12 mgm2 days 2, 4, 6 and 8, 3 monthly cycles of consolidation with ATRA 45 mgm2 days 1-15 and idarubicine 5 mgm2 days 1-4 in the cycle 1, mitoxantrone 10 mgm2 days 1-3 in the cycle 2 and idarubicine 12 mgm2 day 1 in the cycle 3. The consolidation was reinforced for the group of patients with intermediate risk by means of an increase of the idarubicine to 7 mg in the cycle 1 and to 2 days in the cycle 3. In the patients of high risk, the consolidation was reinforced with the addition of altar-c in the cycles 1 and 3. For the maintenance treatment, one will administer to intermittent ATRA 15 days every 3 months and chemotherapy low doses with methotrexate and 6-mercaptopurina during two years 