Retropharyngeal carotid artery
Snoring and obstructive sleep apnea
Plain CT paranasal sinuses
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Reduction in caliber of the oropharyngeal airway secondary to extraluminal compression by ectatic retropharyngeal right internal carotid artery. Both carotid arteries demonstrate a retropharyngeal course, right more than left.
Retropharyngeal carotid artery following an ectatic course can impress the posterior oropharyngeal wall. When seen bilaterally, they are called 'kissing carotids'. The identification is important to prevent any catastrophic iatrogenic injury.