Right carotid sheath mass There is an intensely enhancing mass centered at the right carotid bifurcation with splaying of the right internal and external carotid arteries. Mass measures approximately 3 x 2.5 cm in the AP and transverse dimensions and approximately 4.5 cm in the craniocaudal dimension. Small flow-voids within the mass are evident. Scattered subcentimeter neck lymph nodes are seen which are not significant by size criteria. No other neck masses. Major neck vasculature flow-voids are preserved. Dominant left vertebral artery. Airway remains patent.Degenerative changes are seen in the cervical spine including small disc osteophyte complexes in the lower cervical spine, ossification of the posterior longitudinal ligament at the C7 level, better seen on CT, and bulky anterior flowing osteophytes throughout the cervical spine most consistent with DISH. No high-grade spinal canal stenosis.Suggestion of prior endoscopic sinus surgery with extensive opacification throughout the paranasal sinuses, particularly the left frontal, left maxillary, bilateral ethmoid, and sphenoid sinuses. Visualized brain parenchyma is grossly unremarkable for age.
Hypervascular mass centered at the right carotid bifurcation with imaging features most consistent with a carotid body paraganglioma.