Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
CASE REPORTS
Myelodysplastic Syndrome with Ph Negative Monosomy 7 Chromosome following Transient Bone Marrow Dysplasia during Imatinib Treatment for Chronic Myeloid Leukemia
Kaori Karimata, Masayoshi Masuko, Takashi Ushiki, Takashi Kozakai, Yasuhiko Shibasaki, Toshio Yano, Takashi Abe, Masato Moriyama, Ken Toba, Tatsuo Furukawa, Yoshifusa Aizawa
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Keywords: CML, MDS, monosomy 7, Ph negative cells
JOURNAL OPEN ACCESS

2011 Volume 50 Issue 5 Pages 481-485

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Abstract

We describe a 60-year-old Japanese patient with chronic myeloid leukemia (CML) who developed myelodysplastic syndrome (MDS) with Ph negative monosomy 7 chromosome following transient bone marrow dysplasia during imatinib treatment. Most cases that developed chromosomal abnormality in Ph negative cells during imatinib therapy were reported to have less clinical implications, while rare cases developed MDS/AML. The present case suggested that metaphase karyotype analysis and bone marrow examination should be performed for the long term follow-up under imatinib treatment in cases showing cytopenia. The results also suggested that monosomy 7 in Ph negative cells may be an indicator of a poor prognosis.

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© 2011 by The Japanese Society of Internal Medicine
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