MEDICINE MCQ
NEUROLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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years old man admitted to the hospital. CT scanning revealed Blockage of Sylvian (cerebral) aquaduct . wich changes you are able to distinguish:
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enlarged lateral ventricles
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expanded third ventricle
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expanded fourth and third ventricle
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expanded lateral and third ventricles
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Explanation:
Detailed explanation-1: -Congenital aqueductal stenosis is a form of noncommunicating hydrocephalus in which a complete or partial obstruction of CSF flow at the aqueduct of Sylvius during fetal life results in dilation of the lateral and third ventricles and increased intracranial pressure.
Detailed explanation-2: -The cerebral aqueduct is located within the midbrain, connecting the third and fourth ventricles and surrounded by periaqueductal grey matter (PAG), with the tectum of the midbrain located posteriorly and the tegmentum anteriorly.
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