Lung cancer with brain metastases. There are postoperative findings related to right suboccipital craniotomy with an unchanged right cerebellar hemisphere surgical cavity. There is mild surrounding T2 hyperintensity surrounding the cavity, as well as mild linear enhancement anteriorly, but no associated nodular enhancement. There has been interval decrease in size of a right middle frontal gyrus cystic lesion with nodular enhancement and susceptibility effect and trace associated vasogenic edema, now measuring 6 x 10 mm, previously 10 x 17 mm. Likewise, there has been interval decrease in size of an intrinsically T1 hyperintense left superior frontal gyrus lesion, which now measures 2 x 3 mm, previously 3 x 4 mm. There is no evidence of acute infarct. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable. There is mild scattered paranasal sinus mucosal thickening.
1. Interval decrease in size of the bilateral frontal lobe metastases.2. Postsurgical findings in the right cerebellar hemisphere without evidence of tumor recurrence.