Unappreciated agenesis of cerebellum in an adult case report of a 38-year-old man

An unexpected finding at autopsy of almost complete agenesis of the cerebel lum in an apparently functional, mentally subnormal 38-year-old man who die d as the result of an accidental electrocution is reported. The posterior f ossa was normal in appearance despite nearly complete absence of the cerebe llum. A number of syndromes of cerebellar atrophy or dysgenesis have been r eported, but congenital agenesis is considered a very rare condition. It do es not resemble most common cerebellar malformations or acquired conditions , especially in an adult, who apparently had reasonable motor and coordinat ive function. The relevant literature is reviewed.