Pathology Obstruction to the flow of CSF at the aqueduct of sylvius will most likely lead to enlargement of ? A All of the ventricles B Only lateral ventricle C Only fouh ventricle D Both lateral and third ventricles 💡 Explanation Obstruction to the flow of CSF at the aqueduct of sylvius will most likely lead to enlargement of ? ✓ Correct Answer: D. Both lateral and third ventricles