"anterior cerebral artery (ACA) territory infarction occurs as the cingulate sulcus extends under the falx dragging the ipsilateral branch of ACA with it, specifically the pericallosal artery. If this becomes compressed against the falx, distal anterior cerebral artery infarction can occur, the most common clinical manifestation being contralateral leg weakness 4."
Expected headings
"Complications"
"Subfalcine herniation, also known as cingulate hernia, is the most common type of cerebral herniation. It is generally caused by unilateral frontal, parietal or temporal lobe disease that pushes ipsilateral cingulate gyrus beneath the free edge of the falx cerebri to the opposite side due to raised intracranial pressure 4. Subfalcine herniation frequently occurs anteriorly rather than posteriorly because the posterior falx cerebri is more rigid than the anterior one 4."
"Findings are best visualised on coronal MR imaging 4. Unilateral mass effect from pathology in the frontal, parietal or temporal region, such as intracranial haemorrhage or tumour, causes displacement of the brain away from the mass."
"In subfalcine herniation, the degree of midline shift correlates with the prognosis; less than 5 mm deviation has a good prognosis, whereas a shift of more than 15 mm is related to a poor outcome 4."