International Journal of Hematology

, Volume 92, Issue 1, pp 168–173

Histiocytic sarcoma and underlying chronic myelomonocytic leukemia: a proposal for the developmental classification of histiocytic sarcoma

  • Minako Mori
  • Akiko Matsushita
  • Yohko Takiuchi
  • Hiroshi Arima
  • Seiji Nagano
  • Sonoko Shimoji
  • Takaharu Kimura
  • Daichi Inoue
  • Sumie Tabata
  • Sohshi Yanagita
  • Kenichi Nagai
  • Yukihiro Imai
  • Takayuki Takahashi
Case Report

DOI: 10.1007/s12185-010-0603-z

Cite this article as:
Mori, M., Matsushita, A., Takiuchi, Y. et al. Int J Hematol (2010) 92: 168. doi:10.1007/s12185-010-0603-z

Abstract

A 70-year-old male was admitted because of back pain due to peri-vertebral tumors. The histologic picture of a needle-biopsied tumor specimen showed pleomorphic large cell infiltration into the collagen fibers. On immunohistochemistry, these abnormal cells were positive for CD68, CD163 and lysozyme but negative for CD1a, 21, 30, and S100. Flow cytometric analysis also demonstrated that these cells were positive for CD13, 14, 38, 45, 56, and HLA-DR. A bone marrow aspirate showed the marked infiltration of abnormal large cells with the same surface antigens as described above. A diagnosis of HS was made. He showed monocytosis in the peripheral blood of more than 1.0 × 109/L from presentation. The karyotype of bone marrow cells was 46,XY,+8. Fluorescent in situ hybridization (FISH) analysis with a probe for chromosome no. 8 showed that all these monocytes carried +8, indicating that he had another disorder of chronic myelomonocytic leukemia (CMML). FISH analysis with a probe for chromosome no. 12 demonstrated that the abnormal large cells in the bone marrow were all tetraploid, while analysis with the chromosome no. 8 probe showed more than 8 signals per cell, indicating that HS cells carried octasomy to decasomy of chromosome no. 8. These findings strongly suggest that HS in the present patient originated from underlying CMML.

Keywords

Histiocytic sarcomaChronic myelomonocytic leukemiaMonocytic neoplasmTransformation8 TrisomyTetraploidy

Copyright information

© The Japanese Society of Hematology 2010

Authors and Affiliations

  • Minako Mori
    • 1
  • Akiko Matsushita
    • 1
  • Yohko Takiuchi
    • 1
  • Hiroshi Arima
    • 1
  • Seiji Nagano
    • 1
  • Sonoko Shimoji
    • 1
  • Takaharu Kimura
    • 1
  • Daichi Inoue
    • 1
  • Sumie Tabata
    • 1
  • Sohshi Yanagita
    • 1
  • Kenichi Nagai
    • 1
  • Yukihiro Imai
    • 2
  • Takayuki Takahashi
    • 1
  1. 1.Department of Hematology and Clinical ImmunologyKobe City Medical Center General HospitalKobeJapan
  2. 2.Department of Clinical PathologyKobe City Medical Center General HospitalKobeJapan