M4Eo--eosinophilic variant of acute myelomonocytic leukaemia.

A rare variant of a subgroup of acute non-lymphocytic leukaemia designated by the French-American-British Co-operative Group as acute myelomonocytic leukaemia with bone marrow eosinophilia is described. This variant, first described in 1982 has a distinct bone marrow morphology, a favourable prognosis and shows a unique chromosomal abnormality. This is the first documentation of the condition in Sri Lanka.