Cerebral Vascular Malformations and Headache

Incidental Findings and Normal Anatomical Variants on MRI of the Brain in Adults for Primary Headaches

“…The relationship of cerebral vascular malformations including developmental venous anomalies, arteriovenous malformations, cerebral capillary telangiectasias, cavernous malformations, cerebral arteriovenous fistulas, and headache are reviewed in a recent “Expert opinion.”…”

“…Cerebral Vascular Malformations.-The relationship of cerebral vascular malformations including developmental venous anomalies, arteriovenous malformations, cerebral capillary telangiectasias, cavernous malformations, cerebral arteriovenous fistulas, and headache are reviewed in a recent "Expert opinion." 25 Chiari Malformations.-Imaging prevalence of about 1% of adults. 26 In a retrospective review of 22,591 patients who underwent MRI imaging of the head and cervical spine at one institution over 43 months, 175 (0.8%) were found to have Chiari type I malformation (CM1) with tonsillar herniation extending more than 5 mm below the foramen magnum (age specific or age group-specific prevalence not reported).…”