Dandy-Walker Malformation (DWM) – 1 Per 25,000-35,000 Live Births

What is DWM?: Dandy-Walker malformation (DWM) is a congenital brain abnormality arising from improper embryonic development of the cerebellum and 4th ventricle, characterized by an underdeveloped cerebellar vermis, a cystic, enlarged 4th ventricle, and an enlarged posterior fossa. These structural changes frequently lead to hydrocephalus, a buildup of cerebrospinal fluid that increases intracranial pressure and causes… Read.