<prompt> Boomerang ventricle is a feature of?LissencephalySchizencephalyHoloprosencephalyHuntingtons Chorea  <response>: Pancake Brain and boomeranghorse shoe ventricle is presence of a single large ventricle in Prosencephalon feature of Alobar Holoprosencephaly Can be seen associated with Patau syndromeTrisomy 13. 