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Fig 4. Four examples of small additional aneurysms missed on DSA. A, A very small (0.5 mm) A1 aneurysm (arrow) in a patient with a ruptured middle cerebral artery aneurysm. B, Two supraclinoidal aneurysms (arrows) in a patient with a ruptured posterior communicating artery aneurysm. C, Two middle cerebral artery aneurysms (arrows) in a patient with a ruptured pericallosal artery aneurysm (not shown). D, An intracavernous carotid artery aneurysm (arrow) in a patient with a large ophthalmic artery aneurysm, symptomatic by mass effect.
