Parapharyngeal pleomorphic adenoma
Painless swelling the right submandibular region.
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The MRI sequences demonstrate a well-circumscribed lobulated soft tissue mass within the right prestyloid parapharyngeal space in contact with the deep lobe of the parotid gland, displacing the adjacent pharyngeal tonsil anteromedially. It shows a low signal intensity on T1WI, high signal intensity on T2WI with progressive and heterogeneous enhancement on postcontrast sequences. No restricted diffusion is seen on DWI/ADC. The carotid vessels as well as the internal jugular vein are displaced posteriorly.
A pituitary microdenoma (5 mm) is noted (incidentaloma).