case_images: PMC4310132_01
case_images: Computed tomography: (a) Axial noncontrast head CT demonstrating minimal interhemispheric SAH and multiple areas of acute infarct, most prominently in the anterior cerebral artery distribution. (b) Axial CTA with sagittal and 3D reconstructions demonstrating an 8 x 5 mm bilobed saccular aneurysm located at the junction of the left anterior cerebral anterior and anterior communicating artery (arrows)
case_images: SNI-6-9-g001.jpg
case_images: PMC4310132_01_SNI-6-9-g001.jpg
case_images: F1
case_images: Computed tomography (CT) and CT angiography demonstrated multiple areas of acute infarct, most prominently in the anterior cerebral artery (ACA) distribution, with minimal interhemispheric SAH and a 8 x 5 mm bilobed saccular aneurysm located at the junction of the left ACA and ACoA [Figure 1a and b].
case_images: Angiography and embolization: (a) Anterior-posterior projection of a contrast injection of the left internal carotid artery aneurysm that reveals a bilobed aneurysm (arrow) and proximal vasospasm (arrowhead). (b) Postembolization view showing complete occlusion of the aneurysm with a coil mass (arrow)
case_images: SNI-6-9-g002.jpg
case_images: PMC4310132_01_SNI-6-9-g002.jpg
case_images: F2
case_images: She was taken emergently for angiography and embolization of the aneurysm [Figure 2a and b].
case_images: Prior MRI: Adjacent slices from axial T2-weighted MRI of the brain demonstrating normal anterior communicating artery complex, without evidence of intracranial aneurysm. Study performed 20 months prior to patient presentation (see Figures 1 and 2)
case_images: SNI-6-9-g003.jpg
case_images: PMC4310132_01_SNI-6-9-g003.jpg
case_images: F3
case_images: ACoA complex, as per multiple neuroradiologists at our institution [Figure 3].