[A case of hydrocephalus in follow-up of post-traumatic subdural effusion].

[hydrocephalus with stenosis of the aqueduct of sylvius]

We report an interesting case of hydrocephalus following traumatic subdural effusion . A 50 -year -old male was diagnosed as a traumatic subdural effusion . Three months later , he was transferred to our hospital again because of conscious disturbance and incontinence . Emergent CT showed characteristic hydrocephalus . The lateral ventricle and the third ventricle were remarkably enlarged . After Ventriculo-peritoneal shunt , the symptoms and radiographical findings were resolved . Both the compression of arachnoid villi around the superior saggital sinus and stenosis of the aqueduct by subdural effusion could be associated with the cause of hydrocephalus in this case .