What is the pathogenesis of traumatic cerebral aneurysms?

Updated: Dec 06, 2018
  • Author: David S Liebeskind, MD, FAAN, FAHA, FANA; Chief Editor: Helmi L Lutsep, MD  more...
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Answer

Traumatic aneurysms may be located in peripheral cortical branches secondary to contact with the falcine edge or skull fractures associated with penetrating or closed head injury. Traumatic dissecting aneurysms due to expansion of intramural hematomas are noted most commonly at the skull base. These false aneurysms, devoid of all layers of the vessel wall, may compress cranial nerves or lead to distal embolization. Rupture of the internal carotid artery (ICA) may produce a carotid-cavernous fistula.


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