Non-small cell lung cancer brain metastases A piously demonstrated right frontal operculum cystic T2 hyperintense lesion is again slightly smaller in size, measuring 10 x 14 mm in axial dimension (previously 10 m x 16 mm). The previously demonstrated daughter nodules along the enhancing rim also appear to be smaller in size comparing to prior study. Overlying smooth dural thickening is presumably secondary to craniotomy changes given stability and lack of nodularity. Associated T2 hyperintense edema is unchanged and may reflect a degree of underlying gliosis. Also stable is associated blood products along the periphery of the cystic portion as evidenced by susceptibility technique. A previously described small nodular enhancing lesion on the right middle frontal sulcus is better demonstrated and likely represents vascularity. No other abnormal enhancing lesion is seen.Scattered patchy FLAIR high signal intensity lesions on bilateral periventricular white matter are again seen, unchanged since prior scan.No evidence of acute ischemia, mass effect, or midline shift.Evidence of right fronto temporal craniotomy is seen, unchanged. The ventricles, sulci and cisterns are symmetric and unremarkable. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. Fluid collections on the right mastoid air cells are again noted.
1.Continued interval decrease in size of right frontal operculum mass as well as daughter nodules.2.A previously described small nodular enhancing lesion on the right middle frontal sulcus is better demonstrated and likely represents vascularity. 