This cerebral angiogram demonstrates a berry aneurysm jutting | International Up-to-date Clinical Channel, IUCC

This cerebral angiogram demonstrates a berry aneurysm jutting from the top of the basilar artery of the circle of Willis at the base of the brain. Berry aneurysms arise in a weak point in the arterial wall and generally become large enough to produce symptoms in adulthood.
Berry (saccular) aneurysms are the most common type of intracranial aneurysm, representing 90% of cerebral aneurysms. Generally speaking, there is a ballooning arising from a weakened area in the wall of a blood vessel in the brain. Depending on the size of the aneurysm, their symptomatology ranges from asymptomatic to intracerebral hemorrhage (subarachnoid) in the most extreme cases.

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