Chronic myelomonocytic leukemia (CMMol) developed in a 10-year-old gir
l after treatment of non-Hodgkin's lymphoma with a regimen which did n
ot contain epipodophyllotoxins. t(9;11)(p22;q23) was found in the leuk
emic cells. This case highlights the fact that secondary hemopoietic m
alignancies with 11q23 abnormalities are not restricted to patients tr
eated with epipodophyllotoxins, expands the number of documented cases
of secondary myelodysplasia in children, and adds CMMoL to the spectr
um of hemopoietic malignancies associated with t(9;11).