Cavernous hemangioma of the carotid sheath.

CT of the neck revealed a 5.1 by 4.0 by 5.5 cm well defined soft tissue mass medial to the right SCM. The mass was splaying the carotid artery and internal jugular vein. The right internal jugular vein was deviated and compressed along the anterior lateral aspect of the mass. An enhancing vessel was noted within the posterior aspect of this mass. There was a mild low density along the posterior lateral aspect of the mass suggesting either cystic change or necrosis.