Dandy-Walker Malformation

Dandy-Walker Malformation is a rare brain condition that affects the cerebellum, the part of the brain responsible for coordinating movement and balance. It involves an abnormal development of the cerebellar vermis, which is the central part of the cerebellum, and causes a fluid-filled space called the fourth ventricle to become enlarged. This can lead to problems with motor skills, coordination, and sometimes intellectual development. The condition also affects the fluid circulation in the brain, which may cause increased pressure inside the skull. Symptoms often appear in infancy or early childhood and can include delayed milestones, poor muscle tone, and problems with eye movement.

Dandy-Walker Malformation is a congenital brain malformation characterized by hypoplasia or agenesis of the cerebellar vermis, cystic dilatation of the fourth ventricle, and enlargement of the posterior fossa. It results from abnormal embryonic development of the rhombencephalon during the first trimester. The malformation disrupts normal cerebrospinal fluid flow, often leading to hydrocephalus and increased intracranial pressure. It is associated with a spectrum of neurological impairments including ataxia, developmental delay, and cranial nerve dysfunction. Genetic and environmental factors may contribute, but the exact etiology is often unknown. The condition is clinically significant due to its impact on motor coordination and potential for life-threatening complications from hydrocephalus.