CHORUS
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Nervous system
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subdural hematoma
- incidence: 5% of head trauma patients
- age: infants and elderly (large subarachnoid space with freedom to move)
- cause: damage to subdural veins ("bridging veins")
- acute subdural hematoma:
- manifests hours after injury
- hyperdense (<1 week); isodense (1-3 weeks); hypodense (3-4 weeks)
- underlying brain injury (50%)
- worse long term prognosis than epidural hematoma
- chronic subdural hematoma
- following minor injury; rarely parenchymal injury
- convex configuration (unlike acute subdural)
- interhemispheric subdural hematoma
- most common acute finding in child abuse
(whiplash injury)
- predominace for posterior portion of interhemispheric fissure
Yong H. Hahn, MD - 2 February 1995
Last updated: 1 October 2013
Copyright © 2013, Charles E. Kahn, Jr.
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