JOURNAL OF THE NATIONAL MEDICAL ASSOCIATION, cilt.101, sa.4, ss.370-372, 2009 (SCI-Expanded)
Objective: Myelodysplastic syndrome (MDS) is recognized as a preleukemic disorder with a variable risk of transformation to acute myeloid leukemia. Usually the blast cells in leukemia are transformed after MDS displays a myeloid phenotype. Lymphoid progression had been reported as myeloid-lymphoid hybrid or early B phenotype, but our patient transformed acute T-lymphoblastic leukemia, which is a rare lymphoid transformation.