Snapshot An infant boy is brought to the emergency department due to lethargy and enlarging head circumference. The parents deny any recent infections or trauma to the patient. They report he had 2 episodes of emesis and is inconsolable. On physican exam, head circumference is larger than expected. An MRI of the head is performed, which shows aqueductal funnelling and enlargment of the lateral and third ventricles. (Congenital aqueductal stenosis) Introduction Clinical definition login to view 1 more bullet Epidemiology login to view 3 more bullets Pathogenesis login to view 9 more bullets Presentation Symptoms login to view 4 more bullets Physial exam login to view 3 more bullets Imaging MRI login to view 4 more bullets Treatment Operative login to view 6 more bullets