31-year-old female status post brain biopsy. There is no evidence of intracranial hemorrhage, mass or edema. Redemonstrated is a heterogeneous mass which is centered about the right medial temporal lobe. The lesion exerts mass effect on the right cerebral peduncle, unchanged. The majority of the mass demonstrates hypoattenuation with occasional calcification, similar in appearance to the previous CT examination dated 4/11/2012. Centrally within the mass is a single punctate focus of hypointensity which most likely represents a focus of air.Associated expected postoperative changes include a right frontal burr hole with overlying surgical sutures a small focus of pneumocephalus is adjacent to the burr hole tract, also within the anterior right frontal subdural space.No abnormal extra-axial collections are identified. No midline shift. No additional basal cistern effacement.The ventricles are normal in size and configuration.The calvaria and skull base are otherwise radiographically normal. The visualized paranasal sinuses and mastoid air cells are normally pneumatized.
Stable appearance of the right medial temporal lobe lesion with pneumocephalus and right frontal burr hole compatible with postbiopsy change. No definitive evidence of hemorrhage.