Male 74 years old with history of adenoid cystic carcinoma of palate and CRT Enhancing perineural lesion along the maxillary nerve within the right pterygopalatine fossa and foramen rotundum with extension into the cavernous sinus is redemonstrated. The lesion measures approximately 6 mm (1601/38), and is not significantly changed from prior exam. Areas of increased T2/FLAIR signal most prominent in the subcortical areas suggestive of white matter ischemic degenerative changes. There is no evidence of intracranial hemorrhage or acute infarct. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. Right maxillary sinus mucosal thickening and diffusion restriction appears similar to prior exam. The orbits, skull, and scalp soft tissues are grossly unremarkable.
1. Perineural tumor involving the maxillary nerve within the foramen rotundum and pterygopalatine fossa, appearing similar to prior exam. 2. Stable right maxillary sinus mucosal thickening.