Expected headings
"Descending transalar herniation"
"Ascending transalar herniation"
"Descending transalar herniation occurs as a result of frontal lobe mass effect. There is posterior and inferior displacement of the posterior aspect of the frontal lobe orbital surface over the sphenoid wing. Small herniations involve only the orbital gyri, while larger herniations may include the gyrus rectus."
"Ascending transalar herniation is produced by middle cranial fossa or temporal lobe mass effect. There is displacement of the temporal lobe superiorly and anteriorly across the sphenoid ridge."