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Fig. 2. Case 8: Patient with 1 carotid cave aneurysm and infundibular widening of the posterior communicating artery (PcomA).
A, Intraarterial angiogram, anteroposterior view, showing the left carotid cave aneurysm in the inferomedial direction (arrow).
B, Nonsubtracted (NS) 3D computed tomographic angiography (3DCTA), anteroposterior view, which did not show the left carotid cave aneurysm.
C, Volume subtraction (VS)-3DCTA, anteroposterior view, clearly showing the left carotid cave aneurysm with inferomedial direction (arrow).
D, Intra-arterial angiogram, lateral view, showing an infundibular widening (long arrow) of the left PcomA and a PcomA (short arrow) originating from the top of the infundibular widening.
E, VS-3DCTA, medial view, showing the left carotid cave aneurysm in the inferomedial direction (arrow) and the PcomA (arrowhead) originating from the top of the infundibular widening.
F, NS-3DCTA, posterior view, showing the infundibular widening of the left PcomA and the PcomA (arrow) originating from the top of the infundibular widening.
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