55 years, Male, Reason: Evaluate for posterior fossa contrast enhancement, movement artifact in prior study, history of base of tongue cancer Brain parenchyma appears within normal limits. No intracranial mass or abnormal enhancement is seen in the brain to suggest metastatic disease. No restricted diffusion to suggest acute ischemia. No intracranial hemorrhage. The ventricles are within normal limits in size and configuration. Major flow-voids are preserved.Sella and orbits are grossly within normal limits. Partially empty sella is seen which can be a normal variant. There is a small left maxillary sinus mucus retention cyst and minimal ethmoid mucosal thickening which was present previously. Paranasal sinuses are otherwise clear. There is evidence of prior endoscopic sinonasal surgery. Bone marrow signal and extracranial soft tissues are within normal limits.
Brain MRI appears within normal limits. Specifically, no abnormal enhancement or evidence of metastatic disease.