Chudley-McCullough Syndrome is an extremely rare condition characterized by the association of sensorineural hearing loss with partial corpus callosal agenesis and interhemispheric arachnoid cysts. The sensorineural hearing loss is profound, bilateral, and progressive. Brain abnormalities associated with the condition include hydrocephalus, agenesis of the corpus callosum, frontal polymicrogyria enlarged cysterna magna with cerebellar dysplasia, and nodular heterotopias.