- an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain; in infants it can cause abnormally rapid growth of the head and bulging fontanelles and a small face; in ...

Typically, the central part of the cerebellum called the vermis is absent or has not developed fully. Hydrocephaly is a related complication in individuals with Dandy-Walker due to cysts that form in ...