When a hemorrhage occurs in the brain, Leestma says, "scavenger cells" take over to try and clean it up. Leetsma says its difficult to say how long each have been there. "Those cells can be present for years or longer they seem to get trapped there and that's the end," says Dr. Jan Leestma, forensic neuropathology consultant. Leestma also says many people both adults and children, don't know they have hemorrhages right away.
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