CD7(+) Stem Cell Leukemia Presenting Different Phenotypes in Lumph Node and Bone Marrow.

  • GODA Haruyuki
    Third Department of Internal Medicine, Faculty of Medicine, Kyushu University
  • ABE Yasunobu
    Third Department of Internal Medicine, Faculty of Medicine, Kyushu University
  • YUFU Yuji
    Third Department of Internal Medicine, Faculty of Medicine, Kyushu University
  • MUTA Koichiro
    Third Department of Internal Medicine, Faculty of Medicine, Kyushu University
  • KATSUNO Makoto
    Third Department of Internal Medicine, Faculty of Medicine, Kyushu University
  • GOTO Tatsuro
    Third Department of Internal Medicine, Faculty of Medicine, Kyushu University
  • SADAMURA Shingo
    Third Department of Internal Medicine, Faculty of Medicine, Kyushu University
  • NISHIMURA Junji
    Third Department of Internal Medicine, Faculty of Medicine, Kyushu University
  • NAWATA Hajime
    Third Department of Internal Medicine, Faculty of Medicine, Kyushu University
  • HIRATA Jouji
    Department of Clinical Laboratory, Faculty of Medicine, Kyushu University
  • AKIYOSHI Tomi
    First Department of Internal Medicine, Faculty of Medicine, Fukuoka University
  • KIMURA Nobuhiro
    First Department of Internal Medicine, Faculty of Medicine, Fukuoka University

Bibliographic Information

Other Title
  • リンパ節と骨髄にて異なった形質を示したCD7陽性幹細胞性白血病の1例

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Abstract

A 27-year-old male with systemic lymphadenopathy was diagnosed as lymphoblastic-type lymphoma by inguinal lymph node biopsy in September, 1990. Bone marrow at the initial diagnosis contained 55.4% lymphoblasts with a phenotype of peroxidase (-), CD7 (+), CD4 (-), CD8 (-). Lymphadenopathy and lymphoblasts in bone marrow disappeared after MACOP-B therapy. In December, 1990, however, the patient again noticed swelling of cervical lymph nodes. At this time, the bone marrow contained 36.4% myeloblasts with a peroxidase (+), CD7 (+), CD13 (+), CD33 (+) phenotype. Cytogenetic and genetic study revealed that the lymphoblasts at the initial diagnosis and the myeloblasts at relapse shared an common abnormal karyotype, 11p-, and the same rearranged band of T-cell receptor δ, γ, β genes, suggesting that these two blasts originated from the same clone. The blasts obtained from the cervical lymph node at relapse were still negative for peroxidase, in contrast to the blasts from bone marrow. These findings suggest that this leukemia originated from a stem cell and differentiated along multilineage pathways.

Journal

  • Rinsho Ketsueki

    Rinsho Ketsueki 33 (8), 1046-1051, 1992

    The Japanese Society of Hematology

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