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Abstract
Purine analogs are effective in the treatment of several chronic lymphoproliferative disorders (CLPD) including hairy cell leukemia (HCL). To date, little evidence exists that these drugs are oncogenic. We report a case of HCL in a 66-year-old male treated with 2-deoxycoformycin. Just over 1 year following completion of his treatment, falling platelet and white cell counts were associated with the development of dysplastic features in his bone marrow and a rising blast cell count, culminating in the development of acute myeloid leukemia (AML). To the best of our knowledge only two previous cases of AML have been linked to treatment of HCL with purine analogs, both with 2-chlorodeoxyadenosine. We emphasize the need for long term follow up of patients treated with purine analogs and suggest that even those who are apparently cured be monitored periodically.