Anticancer therapy predisposes patients to infections by the immunosuppression that results from treatment. Although 85% of patients with progressive multifocal leukoencephalopathy (PML) have concurrent HIV/AIDS, PML can also develop in patients after they receive chemotherapy for cancer. The case herein describes a 69-year-old man with history of follicular lymphoma who presented with progress...

Progressive multifocal leukoencephalopathy (PML) is a rare neurologic condition which usually occurs in patients with leukemia, malignant lymphoma, carcinomatosis, acquired immunodeficiency syndrome (AIDS) or a variety of other chronic disease process or in those on immunosuppressive therapy(l). The diffuse parenchyma! infection is caused by a group B human polyoma virus serotype (JC virus)(2)....