AJNR Am J Neuroradiol. 1992 Jan-Feb; 13(1): 283-6.

Unusual dissection of the proximal vertebral artery: description of three cases.

Friedman DP, Flanders AE.

Department of Radiology, Jefferson Medical College and Thomas Jefferson University Hospital, Philadelphia, PA 19107.

We report three cases that reveal an array of etiologic and radiologic findings associated with dissection of the proximal segment of the vertebral arteries. Regardless of etiology, the proximal segment may be the principal site of dissection in these vessels.