Left parapharyngeal mass with myxochondroid tissue, consistent with origin from a neoplasm: oropharyngeal fullness, muffled voice. There is a well-defined, but heterogeneously enhancing mass centered in the left prestyloid parapharyngeal space, which measures up to approximately 6.5 cm. Low T1 and T2 signal intensity foci within the tumor correspond to calcifications. The tumor may arise from the deep lobe of the left parotid gland and appears to be distinct from the left trigeminal nerve trunk. There is narrowing of the oropharyngeal airway due to the mass effect. The left internal carotid artery and internal jugular vein are displaced slightly posteriorly by the mass. The skull base appears to be intact. There is no significant lymphadenopathy in the upper neck. The paranasal sinuses, orbits, and imaged intracranial structures are unremarkable.
A mass measuring up to 6.5 cm and centered in the left prestyloid parapharyngeal space, but perhaps arising from the deep lobe of the left parotid gland, is compatible with a neoplasm, most likely pleomorphic adenoma.