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Arch Otolaryngol Head Neck Surg. 2008;134(4):445.

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Diagnosis: Pseudoaneurysm of the facial artery

Pseudoaneurysms are contained collections of turbulent flow that are in direct communication with an artery. Unlike a true aneurysm, a pseudoaneurysm does not involve all 3 layers of the vessel wall. It occurs as a result of a partial injury to an arterial wall, which in turn causes a hematoma that is contained by surrounding soft tissues. Subsequently, the hematoma liquefies, and the pulsatile arterial flow is contained by a fibrous capsule. Pseudoaneurysms can rupture under sustained arterial pressure.They occur days to months after the initial trauma as an expansile, pulsatile swelling. Unlike arteriovenous fistulas, in which a continuous machinery murmur is heard along with a palpable thrill, pseudoaneurysms have an audible bruit that is heard only during systole. A review of the world literature from 1644 to 1998 by Conner et al¹ revealed that 85% of the 386 reported cases of traumatic aneurysms of the face and temple were . . . [Full Text of this Article]

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Arch Otolaryngol Head Neck Surg. 2008;134(4):443.
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