Anterior communicating artery aneurysm
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Severe headache and drowsiness. Subarachnoid hemorrhage on CT.
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On lateral view, a bilobed aneurysm with a narrow neck - projecting posterosuperiorly.
On Oblique projection, the relation of the aneurysm to the A2 segments of the anterior cerebral arteries revealed.
Features are in keeping of ruptured anterior communicating artery aneurysm, with a bilobed configuration and a narrow neck.