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Common carotid injection in a nine year old child presenting with a cervical pulsatile mass. Note the dysplastic change involving the cervical internal carotid artery and its extension from above the carotid glomus to reach the skull base. The rest of the internal carotid system is normal. This lesion involves the first segment of the internal carotid artery (3rd aortic arch). Courtesy of P. Chewit.
