LIVING ART ENTERPRISES, LLC / SCIENCE PHOTO LIBRARY LIVING ART ENTERPRISES, LLC / SCIENCE PHOTO LIBRARY
MRI image of the head through the brainstem (blue and red), cerebellum (brown) and temporal lobes (blue). A portion of the brainstem called the pons is seen (blue and red). The brainstem is near the middle of the image. Inside of the brainstem are multiple abnormal lesions (red) which are of different sizes. These abnormal lesions are cavernous malformations which are clusters of abnormally dilated capillaries. These abnormal lesions can cause symptoms as a result of their location near or in important brain tissue. They can also expand (enlarge) by oozing blood around their edges. When these lesions cause significant symptoms they can be removed by a neurosurgeon if they are located in a surgically accesible region of the brain.
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