MEDICAL BODY SCANS / SCIENCE PHOTO LIBRARY MEDICAL BODY SCANS / SCIENCE PHOTO LIBRARY
This coronal (frontal) contrast enhanced MRI image of the brain through the level of the brainstem reveals a prominent ring enhancing lesion in the left side of the pons (green). T2 weighted images demonstrated extensive, mass-like brainstem edema and swelling. This represents a form of acute MS that can stimulate a tumor therefore it is referred to as tumefactive.
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