80 year old female patient with CNS lymphoma, follow up examination. There are post-surgical findings related to a prior transphenoidal pituitary surgery with enhancing tissue within the sella and the right cavernous sinus, appearing similar to the prior study. There is subcortical and periventricular white matter abnormal T2 signal which is non-specific but likely represents chronic small vessel ischemic disease. There are scattered foci of susceptibility artifact within the left parietal, bilateral basal ganglia, and temporal lobes, which likely represents chronic blood products. There is an increased degree of T2 hyperintensity just anterolateral to the right cerebral peduncle, best seen on series 501, image 17, which does not demonstrate enhancement.The ventricles and basal cisterns are stable in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The right maxillary sinus is atelectatic. There is a right frontal burr hole. An ovoid nodule within the right parotid gland is not significantly changed. The orbits and scalp soft tissues are grossly unremarkable.
1.No abnormal enhancement to suggest recurrent primary CNS lymphoma.2.Increased T2 hyperintensity anterolateral to the right cerebral peduncle is non-specific and is of uncertain significance, but should be followed on subsequent imaging. 3.Stable appearance of the post-operative sella.4.Unchanged non-specific right parotid nodule.