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  • Title: [Formed visual hallucination after excision of the right temporo parietal cystic meningioma--a case report].
    Author: Yoshimura M, Uchiyama Y, Kaneko A, Hayashi N, Yamanaka K, Iwai Y.
    Journal: Brain Nerve; 2010 Aug; 62(8):893-7. PubMed ID: 20714038.
    Abstract:
    We report the case of a 64-year-old woman with cystic meningioma; this patients was otherwise healthy and experienced formed visual hallucinations after excision of the tumor. She experienced diplopia associated with metamorphopsia, which had persisted for 5 years only when she laid down and turned on her left side. After the excision of the convexity meningioma located in the right temporoparietal lobe, she experienced several types of formed visual hallucinations such as closet-like pictures, flowers sketched on stones, falling maple-like leaves, and moving or wriggling dwarves. She was alert and her visual field was normal; further, she did not experience delirium or seizures. She experienced these hallucinations only when she closed her eyes; these hallucinations persisted for 3 days after the operation. The patient illustrated her observations with beautiful sketches, and the mechanism of visual hallucinations was studied.
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