67-year-old male with a history of non-small cell lung cancer. No restricted diffusion to suggest acute ischemia. No intracranial hemorrhage. No intracranial mass or mass-effect. The ventricles are mildly prominent compatible with age-appropriate volume loss.No significant change in small left middle cranial fossa arachnoid cyst which measures 1.4 x 1.3 cm (series 10, image 14) and associated with mild bony remodeling. Brain parenchyma is otherwise unremarkable for age.No abnormal parenchymal or meningeal enhancement. Major flow-voids are preserved.Sella and orbits are grossly within normal limits. Note is made of bilateral lens implants. Redemonstration of bilateral mastoid air cell opacification (right greater than left). Also again seen are bilateral maxillary sinus mucus retention. Bone marrow signal and extracranial soft tissues are otherwise within normal limits.
1. No evidence of intracranial metastases.2. Unchanged small left middle cranial fossa arachnoid cyst without significant mass effect.3. Redemonstration of bilateral mastoid air cell opacification (right greater than left) and bilateral maxillary mucous retention cysts.