case_images: PMC4982348_01
case_images: Axial non-contrast computed tomography of the head demonstrating oval shaped hyperintense lesion within the projection of the anterior communicating artery
case_images: SNI-7-495-g001.jpg
case_images: PMC4982348_01_SNI-7-495-g001.jpg
case_images: F1
case_images: Rather unexpectedly, non-contrast head CT demonstrated hypointense oval-shaped lesion of 0.9 cm in diameter within the projection of the anterior communicating artery that was mostly consistent with a saccular aneurysm [Figure 1].
case_images: Computed tomography angiography demonstrating a 0.8 x 0.6 cm saccular aneurysm originating from the anterior communicating artery and A2 segment of the left anterior cerebral artery
case_images: SNI-7-495-g002.jpg
case_images: PMC4982348_01_SNI-7-495-g002.jpg
case_images: F2
case_images: Subsequent CT angiography confirmed the diagnosis of 0.8 x 0.6 cm saccular aneurysm originating from the anterior communicating artery and from the A2 segment of the left anterior cerebral artery [Figure 2].