History of metastatic prostate cancer status post recent left frontal region tumor resection. There are postoperative findings related to recent resection of a left frontal convexity mass, along with overlying craniectomy. There is no evidence of gross residual tumor, but there is persistent edema in the underling left frontal lobes. There is regional sulcal susceptibility effect, T2 hyperintensity, and leptomeningeal enhancement, which may be related to hyperemia and/or hemorrhage. There is also diffuse left cerebral convexity dural enhancement and a subdural fluid collection that measures up to 6 mm in thickness. There is a punctate focus of restricted diffusion in the left inferior parietal lobule. There is otherwise a background of patchy cerebral and pontine white matter T2 hyperintensity, which may represent chronic small vessel ischemic disease. 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. There is are small bilateral mastoid air cell effusions. There are bilateral lens implants. There is a small right maxillary sinus retention cyst.
1. Recent resection of a left frontal convexity tumor resection, without evidence of gross residual tumor, but persistent edema in the left frontal lobe.2. Punctate acute infarct in the left inferior parietal lobule.