An Unusual Cause of Vertebral Artery Dissection: Esophagogastroduodenoscopy
Figure 2
Digital subtraction cerebral angiography. (a) Right subclavian injection. The antegrade contrast flow in the right vertebral artery (VA) terminates just below the level of skull base, at the arch of C1 (discontinuous arrow). (b) Left VA injection. The left VA demonstrates normal course and caliber. There is retrograde contrast filling into the distal portion of the right VA and the right posterior inferior cerebellar artery (PICA). The distal segment of the right VA is irregular suggesting the presence of intraluminal clots.
