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Where is the lesion?
Focal vs diffuse?
Focal, and right side of nervous system focal, and left side of nervous system focal, involving midline and contiguous structures on both sides of nervous system diffuse, involving homologous, symmetric, noncontiguous areas on both sides of nervous system
Mass vs nonmass?
Time course of progression of the symptoms?
Based on above, what is the most likely etiology of the lesion?
12/16/08
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