title: Secondary lymphoid malignancy in two children with neuroblastoma.
abstract: Secondary lymphoid malignancy, particularly acute lymphoblastic leukemia (ALL), is rare. We report one case of ALL and another case of mediastinal lymphoblastic lymphoma developed after treatment for neuroblastoma. The secondary ALL characterized by short latency period and an 11q23 translocation apparently was induced by etoposide treatment. The pathogenesis of the secondary lymphoma is less certain and may be related to previous treatment with cyclophosphamide and radiotherapy, host susceptibility, or chance occurrence. One child died of progressive lymphoma and the other remains in remission 1 year following allogeneic bone marrow transplantation. Additional studies are needed to determine the risk, pathogenesis, and optimal treatment for secondary lymphoid malignancy.
authors.affiliation: Division of Pediatrics, Children's Research Hospital, Kyoto Prefectural University of Medicine, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Imashuku
authors.forename: S
authors.initials: S
authors.lastname: Hibi
authors.forename: K
authors.initials: K
authors.lastname: Kosaka
authors.forename: Y
authors.initials: Y
authors.lastname: Tabata
authors.forename: M
authors.initials: M
authors.lastname: Naya
authors.forename: M
authors.initials: M
authors.lastname: Hohjo
authors.forename: S
authors.initials: S
authors.lastname: Todo
mesh_terms: D002648:Child; D002675:Child, Preschool; D006801:Humans; D008297:Male; D016609:Neoplasms, Second Primary / Q000235:genetics / Q000628:therapy; D009447:Neuroblastoma / Q000235:genetics / Q000628:therapy; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000235:genetics / Q000628:therapy