Nicholas P. Byrne

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A 79-year-old woman had a 10-year history of dementia, initially presenting as non-fluent aphasia. Magnetic resonance imaging showed frontal atrophy (left greater than right) and hyperintense foci within white matter. Neuropathologically, there was severe frontal atrophy due to cortical neuronal loss with spongy change and to an even greater loss of white(More)
Strokes have been rarely associated with immunoglobulin G (IVIg) therapy. A 70-year-old woman with stable polycythemia vera developed Guillain-Barré syndrome and received IVIg, 8 days following which she became comatose due to bilaterally symmetric cerebral infarcts. Autopsy showed intravascular aggregates of fibrin-IgG but also platelets and a necrotizing(More)
Pilocytic astrocytoma (PA) is the most common pediatric tumor, with the vast majority being benign (WHO Grade I). Herein, we present a rare sporadic (not radiation- or NF1-associated) anaplastic PA arising from the cerebellum of an adult patient. The diagnosis was based on the coexistence of classic PA and more cellular foci, associated with both tumor(More)
described in experimental studies of subarachnoid epinephrine injection in dogs [12], have only since been reported twice. One case report describes a secretory meningioma with rosette formation associated with Moyamoya disease [10]. This feature was also briefly mentioned and illustrated in the 1982 monograph by Dr. John Kepes [5]. However, to date, no(More)
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