 There is redemonstration of a saccular aneurysm arising from the basilar tip measuring approximately 4 x 5 mm, not significantly changed.The intracranial internal carotid arteries are normal in course and caliber. The middle and anterior cerebral arteries are unremarkable. The vertebral arteries, basilar artery, and posterior cerebral arteries are normal in course and caliber. There is no evidence of flow-limiting stenosis. No additional aneurysms are identified.
Aneurysm arising from the junction of the basilar tip measuring approximately 4 x 5 mm, not significantly changed when allowing for differences in technique.