Table Classification of acute leukaemias
| FAB subtype | Morphology variant | % cases |
|---|---|---|
| AML | ||
| M0 | minimally differentiated leukaemia | 2–3 |
| M1 | myeloblastic leukaemia without maturation | 20 |
| M2 | myeloblastic leukaemia with maturation | 25–30 |
| M3 | hypergranular promyelocytic leukaemia | 8–15 |
| M4 | myelomonocytic leukaemia | 20–25 |
| M5 | monocytic leukaemia | 20–25 |
| M6 | erythroleukaemia (Di Guglielmo's disease) | 5 |
| M7 | megakaryoblastic leukaemia | 1–2 |
| ALL | ||
| L1 | small; uniform (pre-B cell, T cell) | 75 |
| L2 | large; nonuniform (pre-B cell, T cell) | 20 |
| L3 | large; uniform; vacuola (B cell, Burkitt's) | 5 |