CNS infection includes abscesses (mass lesions with surrounding edema), encephalitis or myelitis (inflammation, often viral, of the brain or spinal cord, appearing bright on T2 weighted or FLAIR series MRI) or meningitis (which may be noted as contrast enhancement of leptomeninges on MRI).
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Pyogenic AbscessFindings: An enhancing ring lesion within the left posterior frontal lobe. |