A 58-year-old man presented with an 8-month history of a 2x3 cm right neck mass in the area of the carotid bifurcation. The mass had not changed in size since discovery, the patient had no symptoms and had an otherwise normal physical exam. Initial differential diagnosis included carotid body tumor (chemodectoma) and tumor of the tail of the parotid gland.
MRI scan showed a mass lesion splaying the right common carotid artery bifurcation. Differential diagnosis included carotid body tumor, schwannoma and possibly neoplasm associated with branchial cleft tract epithelium.
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The coronal MRI view of the neck mass is shown. Further evaluation was recommended to document hypervascularity as would be present in a carotid body tumor.
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