Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
Due to seeding from inflammatory disease in the temporal bone or paranasal sinuses, subacute bacterial endocarditis, cystic fibrosis, or congenital heart disease with a right to left shunt allowing venous blood unfiltered by the capillaries to reach the brain.
The lesion consists of a necrotic, supprative center encapsulated by a peripheral rim of hyperemic granulation tissue. It is normally located at the gray matter / white matter junction, and is surrounded by edema. The granulation tissue shows ring enhancement with contrast.
See References Chapter.
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