Basal Ganglia Herniation into the Fourth Ventricle

BACKGROUND: Transtentorial herniation of large cerebral fragments is a rare phenomenon. METHOD: Case Study. RESULTS: Examination of the brain of a 35-year-old male showed massive intracerebral hemorrhage resulting in displacement of basal ganglia components into the fourth ventricle. CONCLUSIONS: Sufficiently rapid intracerebral bleeding can dissect fragments of cerebrum and displace them long distances across the tentorial opening.