Cerebrovascular Diseases


Brain aneurysms are localized swellings that form on weakened artery walls in the brain and may eventually rupture. Two to five percent of people in the United States develop aneurysms because of wear and tear on their brain arteries... more

Arteriovenous Malformations (AVMs)

AVMs are abnormal tangles of blood vessels within the brain — called arteriovenous malformations because abnormal arteries are connected to abnormal veins. The abnormality is congenital (present from birth). It is found in 1 in 700 people (0.14 percent of the general population)... more

Arteriovenous Fistulas (AVF)

AVFs are abnormal connections between blood vessels in the coverings of the brain. The word arteriovenous refers to the direct connection between arteries and veins, and the medical term fistula indicates that two things are connected that should not be connected. This type of abnormality develops as people grow older and is not considered a congenital abnormality — in other words; it is not present at birth.... more

Cavernous Malformations (Cavernoma)

A cavernous malformation is an abnormal cluster of small blood vessels that resembles a raspberry or honeycomb. A person can have one or more cavernous malformations in their brain. Cavernous malformations occur in 0.5 percent to 1 percent of the population... more

Developmental Venous Anomaly (DVA)

Essentially, developmental venous anomalies (DVAs) are larger-than-normal veins within the brain. The abnormality is congenital (present from birth) and occurs in 2 percent to 3 percent of the population... more

Ischemic Stroke

Ischemic strokes occur when blood flow to the brain is blocked or insufficient to support cellular function.   If blood flow is not restored or improved cells in the brain will die...more

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American Association of Neurological Surgeons

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