title: T-cell acute lymphoblastic leukemia relapsing as acute myelomonocytic leukemia and terminating possibly as chronic myelocytic leukemia.
abstract: A 9-year-old boy suffering from T-cell acute lymphoblastic leukemia (T-ALL) with a mediastinal mass had a complete remission as a result of treatment. Ten months later, he developed a typical acute myelomonocytic leukemia (AMMoL) pattern. Two months after a second relapse, he showed a clinical picture that was indistinguishable from chronic myelocytic leukemia (CML). At autopsy, massive infiltration of CML-like cells was observed even in the thymus (190 g). These observations suggest that the leukemia in this child arose in a pluripotent stem cell capable of differentiation into both T-lymphocytic and myelomonocytic lineages.
mesh_terms: D000911:Antibodies, Monoclonal; D002454:Cell Differentiation; D002648:Child; D006412:Hematopoietic Stem Cells / Q000276:immunology / Q000473:pathology; D006801:Humans; D007945:Leukemia, Lymphoid / Q000473:pathology*; D007951:Leukemia, Myeloid / Q000473:pathology*; D015470:Leukemia, Myeloid, Acute / Q000473:pathology*; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D014411:Neoplastic Stem Cells / Q000276:immunology / Q000473:pathology; D013601:T-Lymphocytes / Q000473:pathology; D013950:Thymus Gland / Q000473:pathology
chemical_list: D000911:Antibodies, Monoclonal