Here is a case of Carotid Artery Dissection for the Radiology Grand Rounds submitted by Dr Sumer Sethi of Teleradiology Providers. Concept and Archive of the Radiology Grand Rounds is available at- Radiology Grand Rounds
Carotid artery dissection is a significant cause of ischemic stroke in all age groups. Dissection of the internal carotid artery can occur intracranially or extracranially, with the latter being more frequent. Internal carotid artery dissection can be caused by major or minor trauma, or it can be spontaneous in which case genetic, familial, and/or heritable disorders are likely etiologies. MRA signs of dissection include irregular vessel margins, filling defects, extravasation of contrast, vascular occlusion, and caliber changes of the vessel. The latter sign is important and appreciated on axial views, but 3-dimensional reconstructed views allow study from any angle. This is 11yr old who presented with hemiplegia after head injury, also noted was beaded appearance of external carotids which suggest pre-existing fibromuscular dysplasia.