 Interval resection of right frontal osseous lesion without evidence of residual enhancing tissue. An additional enhancing dural-based lesion overlying the anterior right frontal lobe and demonstrates susceptibility, which likely representing calcification, measures approximately 7 x 8 mm (image 17, series 1001), and remains unchanged in size and appearance. There is unchanged minimal mass effect of the underlying right frontal lobe without vasogenic edema. Otherwise, there is no abnormal enhancement or mass within the brain elsewhere. A few scattered foci of FLAIR signal are non-specific and unchanged. A small left choroid fissure cyst is incidentally again seen. No diffusion-weighted abnormalities are identified. The ventricles are normal in size and configuration. Flow voids are present within the major vessels indicating patency. There is mild right maxillary sinus mucosal thickening and small left maxillary sinus mucus cyst. There is left greater than right bilateral mastoid opacification.
1. Postsurgical changes of right frontal calvarial lesion resection without evidence of residual enhancing tissue.2. Unchanged small right frontal dural-based lesion with calcification which likely represents a meningioma.