acute myeloid leukemiachildhood acute myeloid leukemiaacute myeloid leukemia diagnosisacute myeloid leukemia prognosisacute myeloid leukemia symptomstages of acute myeloid leukemiaadult acute myeloid leukemiaacute myeloidacute leukemia treatment optionssymptoms of myeloid leukemiaacute myeloid leukemia flt3acute myeloid leukemia life expectancy