PMC9699843_01
MRA of the brain demonstrates a small outpouching lesion arising from the medial wall of the proximal A2 segment of the left ACA, pointing in a superomedial direction and measuring about 2 mm in neck width and height.
SNI-13-525-g001.jpg
PMC9699843_01_SNI-13-525-g001.jpg
F1
The brain MRI showed a small outpouching lesion arising from the medial wall of the proximal A2 of the left ACA, pointing in the superomedial direction and measuring about 2 mm in neck width and height, and presenting as a suspected saccular aneurysm [Figure 1].
Cerebral angiogram reveals a funnel-shaped outpouching lesion at the anterior communication artery (AcomA) with a perforating branch arising from the dome of lesion, leading to a suspected diagnosis of an infundibulum dilatation perforating a branch of the AcomA measuring 1.4 x 1 mm.
SNI-13-525-g002.jpg
PMC9699843_01_SNI-13-525-g002.jpg
F2
The images from the three-dimension angiography are shown in Figure 2.