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Central nervous system involvement has not previously been described in patients with hairy cell leukemia (HCL). A patient is reported who presented with meningeal involvement as his initial symptom of HCL. Diagnosis was established by morphologic and cytochemical studies of his cerebrospinal fluid (CSF) and bone marrow. Treatment with whole-brain irradiation and intrathecal chemotherapy was successful in clearing leukemic cells from the CSF with resolution of symptoms.
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Wolfe et al. (1984) studied this question.
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