[The myelodysplastic syndrome].

Clinical data of 70 patients, treated and observed with myelodysplastic syndrome between 1977 and 1989 were analysed. Two-thirds of the patients belonged to the elder age-group and a mild female predominance was registered. With the application of complex cytochemical-histological and cytogenetical methods, correct diagnosis could be established. The clinical material included patients from different morphologic subtypes: 19 with refractory anaemia (with a longer course of the illness). 20 with sideroblastic anaemia, 26 with chronic myelomonocytic leukaemia and the remaining 5 with refractory anaemia with excess of blasts (a more progressive type of the myelodysplastic syndrome, with a short duration). The mean survival of all patients were 42 months. 45 (69%) died during this period and 12 (18.5%) among them in acute myelogenous leukaemia (mean survival: 16 month). Megakaryoblastic leukaemic transformation was observed in three patients with sideroblastic refractory anaemia. Haemorrhage and infection-sepsis, due to thrombocytopenia and/or granulocytopenia, was fatal in 30 cases. In the treatment of the myelodysplastic syndrome an appropriate supportive therapy (blood transfusion, antibiotics) has a decisive importance. A more aggressive treatment with cytostatic drugs is suggested in the progressive form of the disease of younger patients and in patients with overt acute leukaemia.