29 years, Female, status post craniotomy for right frontal mass. There are expected postsurgical changes of recent right frontal craniotomy for resection of right frontal lobe tumor. Expected postsurgical changes include blood products and foci of air within the resection cavity and along the right frontal convexity. Tumor margins were not well-defined. There is T2/FLAIR hyperintensity surrounding the resection cavity extending to the right lateral ventricle as well as corpus callosal body, with the medial aspect of the signal abnormality similar to the preoperative study. There is mild leftward subfalcine herniation and midline shift measuring approximately 3 mm at the foramen of Monro similar to prior. No uncal herniation There is minimal restricted diffusion compatible with cytotoxic edema and blood products along the medial aspect of the resection cavity margin. No large infarct or hemorrhage elsewhere in the brain is evident. No additional lesions elsewhere in the brain. No hydrocephalus. Ventricles remain nondilated with mild effacement of the right lateral ventricles similar to prior. Major flow-voids are preserved.
Expected postsurgical changes of right frontal lobe tumor resection. There appears to be resection of at least a majority of the tumor. Nonenhancing T2/FLAIR hyperintensity surrounding the resection cavity may represent a combination of residual infiltrative tumor and vasogenic edema. 