A brain arteriovenous malformation (AVM) is an abnormal tangle of unusually formed blood vessels in the brain (Figure 1). Over time, these vessels can weaken and bleed into the brain itself. Brain ...
A brain aneurysm is an area of weakness in a brain blood vessel that over time can grow larger and thinner. Aneurysms are dangerous because they can grow and eventually rupture allowing blood to leak ...
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