PMID: 3995497Jun 1, 1985

Trisomy 7 and 8 in Ph-negative chronic eosinophilic leukemia

Cancer Genetics and Cytogenetics
P A MaubachJ Rastetter


The results of cytogenetic analyses of bone marrow and peripheral blood cells in a 67-year-old male with chronic eosinophilic leukemia (EL) are described. Although the patient showed leukocytosis with marked eosinophilia, initial chromosome findings in bone marrow revealed a normal male karyotype. Seven months later, more than 80% of bone marrow cells had a hyperdiploid karyotype (48,XY, +7, +8), the remaining cells being normal. Seven weeks later, the identical abnormal karyotype was observed in about 30% of banded metaphases of stimulated peripheral blood cells. No mitoses were found in unstimulated cultures. No Ph chromosome was observed. So far, trisomy 8 has been described for only two cases of EL, whereas trisomy 7 has never been observed.

Related Concepts

Chromosome Banding
Chromosomes, Human,6-12
Karyotype Determination Procedure
Differential White Blood Cell Count Procedure
Polyploid Cell
Partial Trisomy

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