Acquired Immunodeficiency Syndrome with Progressive Multifocal Leukoencephalopathy and Monoclonal B-Cell Proliferation

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Abstract
A 34-year-old man who used intravenous drugs developed the acquired immunodeficiency syndrome with lymphadenopathy, Mycobacterium tuberculosis pneumonia, and progressive multifocal leukoencephalopathy. Early biopsy specimens of the lymph node showed hyperplasia without evidence of lymphoma. Later, immunologic analysis of peripheral blood lymphocytes showed inversion of the helper/suppressor T-lymphocyte ratio and persistent monoclonal B-cell proliferation without clinically overt lymphoma. The clinical course of this patient suggests that abnormal immune responses seen in the setting of the acquired immunodeficiency syndrome may evolve into lymphoproliferative disorders detectable by peripheral blood lymphocyte analysis.