Magnetic resonance imagings (MRI) showed the nodular lesion of the third ventricle to be hyper intense, without enhancement, in weighted spin-echo sequences, and mainly hypo intense in-weighted spin-echo sequences.
External ventricular drainage resulted in clinical and radio logic improvement. The cyst was evacuated by endoscopy, and pathologic examination revealed colloid cyst material.
A 58-year-old woman presented with cognitive deterioration, memory loss and apathy of approximately 3 months' duration. Her history was unremarkable. Neurologic examination revealed temporal -- spatial
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