19-year-old woman with history of headache, vision changes, nausea, and vomiting. There is no diffusion-weighted abnormality to suggest ischemia. There is no susceptibility effect to suggest intracranial hemorrhage. There are no intracranial masses or mass-effect. The ventricles are within normal limits in size and configuration. The brain parenchyma is normal for age. There is no abnormal parenchymal or meningeal enhancement. The major flow-voids are preserved. Although this is not a dedicated MR of the orbits, the orbits and sella appear normal. The optic nerves are normal in caliber. There are small mucosal retention cysts in the maxillary sinuses bilaterally, otherwise the paranasal sinuses and mastoid cells are clear. Bone marrow signal and extracranial soft tissues are within normal limits.
No finding to explain the patient's symptoms, specifically no evidence for acute intracranial hemorrhage, mass, or infarct.