Presentation
Headaches
Patient Data
Age: 70 years
Gender: Male
From the case:
Blood blister-like aneurysm
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There is a moderate stenosis of the basilar artery just proximal to the origin right AICA.
There is a focal outpouching in the anterior aspect of the basilar artery after the origin of the right AICA with a neck larger than the actual diameter of the outpouching. This apperance suggests a blood blister-like aneurysm.
From the case:
Blood blister-like aneurysm
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The red arrow shows the wide-neck basilar aneurysm.
Case Discussion
The proximal narrowing of the basilar artery is either due to sequela of a previous dissection or noncalcified atherosclerosis. Blood blister-like aneurysm are known to arise post-dissection amongst other etiologies.
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