myelodysplastic syndrome childhood myelodysplastic syndrome NCIT:C68744 childhood MDS NANDO:2100003 MEDGEN:389541 NANDO:2200019 GARD:0025913 childhood myelodysplastic syndrome An uncommon hematologic malignancy occurring during childhood. Many of the morphologic, immunophenotypic, and genetic changes seen in adult myelodysplastic syndromes are also observed in the childhood variants of the disease. Children present with neutropenia and thrombocytopenia more often than adults, and bone marrow hypocellularity is more often seen in children than adults. MONDO:0044873 myelodysplastic syndrome UMLS:C2347761