Adenoid cystic carcinoma of the right pterygopalatine fossa with right V2 numbness treated with chemoradiation. There is unchanged enhancing tumor within the right cavernous sinus extending from the right foramen rotundum and pterygopalatine fossa, measuring up to 5 mm in width. The skull base and adjacent internal carotid artery flow voids are otherwise intact. Likewise, the Meckel caves and cisternal trigeminal nerves are intact. There is no evidence of acute infarction or midline shift. The ventricles are normal in size and configuration. There is moderate mucosal thickening and fluid in the right maxillary sinus, mild mucosal thickening in the left maxillary sinus, and secretions in the nasal cavity. There is fluid signal within the bilateral mastoid air cells. There are scattered foci of T2 hyperintensity in the cerebral white matter.
1. Unchanged treated perineural tumor involving the second division of the right trigeminal nerve with extension in the cavernous sinus.2. Findings suggestive of acute rhinosinusitis.