Abstract
A 78-year-old female presented with coexisting primary angiitis of the central nervous system (CNS) and cerebral amyloid angiopathy (CAA) manifesting as motor aphasia caused by a left frontal lobe lesion. Magnetic resonance imaging revealed an enhanced lesion with moderate surrounding edema.Technetium-99m propylene amine oxime single-photon emission computed tomography showed decreased cerebral blood flow (CBF) in the lesions, and high serum soluble-interleukin-2 level was detected, suggesting intravascular lymphoma of the CNS. Cerebral biopsy revealed CAA with secondary florid vasculitic appearance. The CBF and neurological symptoms, such as aphasia and dementia, recovered following steroid treatment. Cerebral vasculitis associated with CAA should be included in the differential diagnosis of an unusually enhanced lesion, because timely diagnosis and aggressive treatment are critical to successful recovery in such elderly patients.
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