FIG 4. Representative findings of serial changes of the lesion on cerebral angiograms.

A, Oblique view angiogram of the right carotid artery, obtained at admission, shows mild stenosis accompanied by double lumen (arrowheads) at A2.

B, Oblique view angiogram of the right carotid artery shows progression to severe stenosis (closed arrowheads) with aneurysmal dilation (open arrowhead) 2 weeks after onset.

C, Oblique view angiogram of the right carotid artery shows resolution 5 months after onset (arrowheads).