RESUMO
The article describes the modern classification of acute leukemia, gives criteria of the diagnosis of acute leukemia, and its basic clinical syndromes. The authors stress that the main task throughout medical staging (till patient's admission to the specialized hematological centre) is to prepare patient for medical staging and to deal with emergencies which appear in the beginning of illness. The article contains the list of counterindications to evacuation, and recommendations for treatment of anemic, hemorrhagic and intoxication syndromes, and also concerning the treatment of patients with agranulocytosis. A special attention is drawn on the management regimen of patient. The authors emphasize that all transportable patients with a confirmed diagnosis of acute leukemia must be immediately evacuated to the specialized centers for stationary polychemical treatment.