(A) The patient's initial diagnostic angiogram at the time of aneurysmal subarachnoid hemorrhage. A 6 mm anterior communicating artery aneurysm is shown (arrow). The aneurysm was treated in the same setting with endovascular coiling. A follow-up diagnostic angiogram obtained eight months after aneurysmal subarachnoid hemorrhage shows complete obliteration (B, arrow). At the time of her perimesencephalic hemorrhage five years later, a diagnostic angiogram reveals the previously coiled anterior communicating artery aneurysm (C, arrowhead); no residual filling of the aneurysm was noted, and no other vascular abnormalities were seen.