Deletion of the long arm of chromosome 20 in a patient with chronic neutrophilic leukemia: Cytogenetic findings in chronic neutrophilic leukemia

Abstract excerpt

We encountered a 67-year-old female with chronic neutrophilic leukemia (CNL). Cytogenetic study showed she had a deletion in the long arm of chromosome 20. This finding indicates that CNL, in this case, is a clonal disorder. Most CNL patients have normal karyotypes, and only four patients with cytogenetic abnormalities, including two cases who received chemotherapy before the cytogenetic abnormality was detected,...

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