Arteriovenous malformation of the scalp with cerebral steal.

BACKGROUND

Arteriovenous malformation of the scalp resulting from blunt trauma to the head is an unusual occurrence and is rarely associated with neurological sequelae. This case details an arteriovenous malformation with a cerebral steal phenomenon.

METHODS

A 21-year-old man presented with an enlarging, pulsatile mass in the right facial/temporal area without known cause. CT and angiography were consistent with a large arteriovenous malformation involving the external carotid system, causing a secondary cerebral steal that resulted in neurological symptoms including seizure. Surgical resection of the mass was undertaken.

RESULTS

The patient had an uncomplicated preoperative course with complete resolution of all neurologic symptoms.

CONCLUSION

Cerebral steal is an uncommon consequence of traumatic extracranial arteriovenous malformation. The current literature is reviewed, and the diagnostic approach as well as therapeutic options are discussed.