Disappearance and reappearance of cerebral aneurysm in serial arteriograms

✓ A case is reported in which a left frontopolar artery aneurysm was demonstrated, disappeared, and then reappeared in a series of angiographic studies obtained during the conservative management of two episodes of subarachnoid hemorrhage. Only 23 days separated the first and last angiograms; three days later the aneurysm was successfully clipped.