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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Obstruction to the flow of CSF at the aqueduct of Sylvius will most likely lead to enlargement of
assistant
The correct answer is  CSF formation - choroid plexuses of the lateral third, and fouh ventricles. Some also originate from the ependymal cells lining the ventricles and from the brain substance CSF Circulation - lateral ventricles - third Ventricle of Sylvius - IV ventricle of magendie and Luschka - subarachnoid space - absorption by arachnoid vill Therefore, obstruction at aqueduct of sylvius will lead to enlargement of both lateral and third ventricles.