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Question
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68 year old man has difficulty reading. He can write a sentence but cannot read his own words. On testing he has a right sided hemianopia. In addition to the occipital lobe which area is most likely affected?
Explanation
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Patient has alexia without agraphia, acquired inability to read but can write. Localization is left occipital cortex with extension to involve the splenium. Its is a disconnection syndrome, due to a disconnection between the intact right visual cortex & angular gyrus.
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Reference
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Barton, J. J. S. Higher Cortical Visual Deficits. CONTINUUM: Lifelong Learning in Neurology 20, 922 (2014).
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Option 1
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Is Correct (Option 1):
Angular gyurs
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Option 2
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Is Correct (Option 2):
Anterior temporal lobe
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Option 3
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Is Correct (Option 3):
Cingulate gyurs
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Option 4
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Is Correct (Option 4):
Splenium of corpus callosum
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