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vascular

Cerebral cavernous malformation

Cavernous hemangioma, also called cavernous angioma, , or cavernoma, is a type of venous malformation due to endothelial dysmorphogenesis from a which is present at birth. A cavernoma in the brain is called a cavernous malformation or CCM. Despite its designation as a hemangioma, a cavernous hemangioma is a condition, not a tumor, as it does not display endothelial hyperplasia. The abnormal causes a slowing of blood flow through the cavities, or "caverns". The blood do not form the necessary junctions with surrounding cells, and the structural support from the smooth muscle is hindered, causing leakage into the surrounding tissue. It is the leakage of blood () that causes a variety of symptoms known to be associated with the condition.

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Plain-language summary adapted from Wikipedia. Not medical advice.