Abstract
We studied the results of culturing and karyotyping of fresh BM and defrosted BM cells from 11 patients with cytogenetic abnormalities with the diagnosis of acute myeloid leukemia (AML). In 8 of 11 patients the cytogenetic results from the fresh and defrosted BM were comparable with respect to the amount and quality of abnormal metaphases. In only one patient one abnormal cell-line (out of two) re-appeared in the frozen BM, probably due to selection, and in three patients we found a distinct decrease of amount and quality. In conclusion, cytogenetic analysis of cryopreserved BM cells can be a reliable alternative to analysis of fresh cells.
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