title: Secondary myeloid/natural killer cell acute leukemia following T-cell lymphoma.
abstract: A 56-year-old woman was treated with combination chemotherapy and radiation therapy for peripheral T-cell lymphoma. Following complete remission for a period of 6 months, she returned again with marked leukocytosis. Leukemic cells were characterized by scanty cytoplasm with fine azurophilic granules, and were highly positive for myeloperoxidase and sudan black-B. Immunophenotypic analysis revealed that blast cells were positive for myeloid antigens (CD13, CD33), and natural killer (NK) cell antigen (CD56), but negative for T-cell antigens (CD2, CD5, CD7), B-cell antigens (CD19, CD20), CD34, and HLA-DR. The case was diagnosed as secondary myeloid/NK cell acute leukemia following non-Hodgkin's lymphoma. Despite aggressive chemotherapy against leukemia, she died of multiorgan failure 7 months following onset of leukemia. We present, to the best of our knowledge, the first published report of what seems to be a secondary myeloid/NK cell acute leukemia following T-cell lymphoma.
authors.affiliation: Department of Internal Medicine; Chonnam National University Medical School, Kwangju, Korea.
authors.forename: J J
authors.initials: JJ
authors.lastname: Lee
authors.forename: H J
authors.initials: HJ
authors.lastname: Kim
authors.forename: I J
authors.initials: IJ
authors.lastname: Chung
authors.forename: M R
authors.initials: MR
authors.lastname: Park
authors.forename: D W
authors.initials: DW
authors.lastname: Ryang
authors.forename: C
authors.initials: C
authors.lastname: Choi
mesh_terms: D000208:Acute Disease; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage; D020732:Cytogenetic Analysis; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D016130:Immunophenotyping; D007694:Killer Cells, Natural / Q000737:chemistry; D007951:Leukemia, Myeloid / Q000175:diagnosis* / Q000473:pathology; D016399:Lymphoma, T-Cell / Q000188:drug therapy / Q000473:pathology* / Q000532:radiotherapy; D008875:Middle Aged; D016609:Neoplasms, Second Primary / Q000175:diagnosis* / Q000473:pathology