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A 15-year-old Peruvian girl who lived in the Andes mountains had a three-month history of headache, nausea, vomiting, and visual obscuration and a one-month history of incoherent speech, confusion, and visual and auditory hallucinations. On examination, she had bilateral papilledema, neck stiffness, and psychomotor retardation. Magnetic resonance imaging (MRI) of the brain revealed numerous diffusely distributed, cystic areas, which created a "Swiss cheese" appearance. On the T2-weighted scan (Panel A), the cysts were bright. On the T1-weighted scan (Panel B), numerous cysts were evident in the tongue, and intraventricular cysts (arrow) were also present. The cysts were dark, . . . [Full Text of this Article] |