Left parapharyngeal tumor: asymmetry of left tonsil. There is a well-defined enhancing mass in the left poststyloid parapharyngeal space that measures up to approximately 4 cm in width and 5 cm in length. The mass mildly narrows and markedly displaces the left internal carotid artery anterolaterally and considerably compresses the left internal jugular vein. The other major cervical arteries are otherwise patent and there is a two vessel aortic arch. However, there is associated narrowing of the oropharyngeal airway. There is also an enhancing fusiform mass in the left mandibular body along the inferior alveolar nerve canal, which measures approximately 3 cm in length and 10 mm in width. There is no significant lymphadenopathy in the neck. The thyroid gland and salivary glands are intact. The orbits, skull, paranasal sinuses, and imaged intracranial structures are grossly unremarkable.
1. A left parapharyngeal space mass that measures up to 5 cm likely represents a peripheral nerve sheath tumor.2. Another mass in the left mandible likely represents a peripheral nerve sheath tumor.