50-year-old man with history of metastatic lung cancer. There are several subcentimeter foci of abnormal enhancement within the supratentorial and infratentorial compartments consistent with metastatic disease, not significantly changed compared to the 7/18/2016 examination. The largest lesion is in the right parietal lobe (1103/111) which measures 4 x 5 mm, unchanged. Additional lesions are present within the right periventricular white matter, right occipital lobe, right frontal lobe, and left cerebellum along the folia. None of these lesions appear significantly changed. No new lesions are identified. There is no significant associated perilesional edema or mass effect.There is no evidence of intracranial hemorrhage or acute territorial infarction. The ventricles, sulci and basal cisterns are normal in size and configuration. There is no midline shift or herniation. No extra-axial fluid collection is identified. Normal flow-voids are demonstrated in the major intracranial vascular structures. The midline structures and craniocervical junction are within normal limits. There is moderate mucosal thickening within the right maxillary sinus and mild mucosal thickening within the left maxillary sinus.
Scattered small cerebral and cerebellar metastases, not significantly changed allowing for slight differences in technique. No significant associated perilesional edema or mass effect.