PMC4982348_01
Axial non-contrast computed tomography of the head demonstrating oval shaped hyperintense lesion within the projection of the anterior communicating artery
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F1
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].
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
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F2
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].