case_images: PMC4349106_01
case_images: A 42-year-old woman with external carotid-external jugular AVF. Axial contrast-enhanced CT shows the fistula (black arrow) between the left external carotid artery (short white arrow) and the left external jugular vein (long white arrow) with associated dilatation of these vessels. The left internal jugular vein (long dashed arrow) is incidentally hypoplastic, as compared with the normal right internal jugular vein (short dashed arrow).
case_images: iranjradiol-12-01-7450-g001.jpg
case_images: PMC4349106_01_iranjradiol-12-01-7450-g001.jpg
case_images: fig15690
case_images: Significant dilatation of the left common carotid artery, 20 mm in diameter, and the left external carotid artery were seen, accompanied by dilatation and tortuosity of the left external jugular vein; however, the major branches of the left external carotid artery had normal size and appearance (Figure 1).