62 years, Male, dizziness, visual changes, weakness. History of lung cancer and head and neck cancer. No restricted diffusion to suggest acute ischemia. No intracranial hemorrhage. No intracranial mass or mass-effect. The ventricles are within normal limits in size and configuration. Tiny focus of calcification along the right lateral aspect of the fourth ventricle again seen. Major flow-voids are preserved.Sella and orbits are grossly within normal limits. Minimal right maxillary sinus mucosal retention cyst. Mastoid air cells are clear. There is nonspecific heterogeneous marrow signal without large destructive lesions.
No evidence of recent infarct, mass, or mass effect. 