Türkiye Klinikleri Pediatri Dergisi, cilt.30, sa.2, ss.156-159, 2021 (Scopus)
Myelodysplastic syndrome (MDS) is a rare disorder in childhood. It is often characterized by cytopenias, morphological dysplastic changes, functional abnormalities in hematopoietic cells, and an increased risk for acute myeloid leukemia (AML). Transformation of MDS into AML can often be seen, but the transformation into acute lymphoblastic leukemia (ALL) is extremely rare in childhood. Previously only a few cases have been reported in the literature. In this article, we presented a 7-year-old female patient with trisomy 5 cytogenetic abnormality who developed ALL 9 months after the diagnosis of MDS, and a 6-year-old female patient with trisomy 8 cytogenetic abnormality who developed ALL 4 months after the diagnosis of MDS.