Oncohematology

Acute Myeloblastic Leukemia Without Maturation (FAB M1)

Blood smear in acute myeloblastic leukemia without maturation (FAB M1): pronounced leukocytosis, myeloblast morphology, and laboratory diagnostic criteria.

Blood smear: myeloblasts with nucleoli in acute myeloblastic leukemia M1
Blood smear: myeloblasts with nucleoli in acute myeloblastic leukemia M1

A patient with suspected acute leukemia. A complete blood count was performed, and the diagnosis was confirmed.

Marked leukocytosis was noted, with more than 90 percent of cells being myeloblasts. The picture corresponds to acute myeloblastic leukemia without maturation, variant 1 according to the French-American-British classification.