Syncope and collapse: concern for seizures. There is no evidence of hippocampal sclerosis, heterotopia, intracranial hemorrhage, mass, or acute infarct. The brain parenchyma, brainstem, and cerebellum appear unremarkable. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, paranasal sinuses, and scalp soft tissues are grossly unremarkable. There is an area with fat signal characteristics in the right clivus that measures up to 20 mm.
1. No evidence of potential seizure foci.2. An area with fat signal characteristics in the right clivus likely represents arrested pneumatization of the sphenoid, which is an anatomic variant. Further evaluation via dedicated skull base imaging may nevertheless be useful.