Analysis of 75 cases of acute myeloid leukaemia classified according to the FAB classification.

75 cases of acute myeloid leukaemia were retrospectively classified according to the French-American-British (FAB) classification. It was found that: (1) the proposed classification was easily applicable and reproducible; (2) M2 subtype was the most frequent (48%); (3) splenomegaly was absent in M1 subtype, and (4) in M2 subtype, a considerable number of cases presented with normal neutrophil and platelet counts.