Brain biopsy is the removal of a small piece of brain tissue for the diagnosis of abnormalities of the brain. It is used to diagnose Alzheimer's disease, tumors, infection, inflammation, and other brain disorders.
The procedure might endanger cognitive or basic functions localized in the biopsied area. That complication is an even bigger risk if the biopsy is done on the more deeply embedded white matter tissue that serves to actually connect the gray matter together (the gray matter is home to most of our cognitive functions).
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