title: Clonal monosomy 7 and 5q--in a child with myelodysplastic syndrome.
abstract: The authors report the case of a 5-year-old boy referred for thrombocytopenia and neutropenia. Bone marrow examination showed a myelodysplasia with clonal monosomy 7. The acceleration of the disease was marked by the appearance of an additional cytogenetic abnormality, i.e., the deletion of the long arm of chromosome 5 in the clonal cells. RAS gene mutation was not detected. Chemotherapy was started to achieve complete remission before a bone marrow transplantation. This treatment was complicated by a prolonged aplasia and the patient died of systemic mycotic infection.
authors.affiliation: Department of Pediatric Hematology and Oncology, Cliniques Universitaires St-Luc, University of Louvain, Brussels, Belgium.
authors.forename: C
authors.initials: C
authors.lastname: Chantrain
authors.forename: C
authors.initials: C
authors.lastname: Vermylen
authors.forename: L
authors.initials: L
authors.lastname: Michaux
authors.forename: B
authors.initials: B
authors.lastname: Brichard
authors.forename: G
authors.initials: G
authors.lastname: Cornu
mesh_terms: D002675:Child, Preschool; D002872:Chromosome Deletion; D002895:Chromosomes, Human, Pair 5; D002897:Chromosomes, Human, Pair 7; D006801:Humans; D008297:Male; D009006:Monosomy; D009190:Myelodysplastic Syndromes / Q000235:genetics*