Old Cerebral Infarct (low power)

Old Cerebral Infarct (low power) •Lower power view of old cerebral cystic infarct with edges designated by arrows. •This is a characteristic picture of an old infarct where the ischemic tissue becomes liquified and is taken up by macrophages leaving a cyst behind with only a few remnants of tissue remaining in the cyst and gliosis about the edge. •Brain tissue heals with an astroglial scar not a connective scar caused by proliferation of fibroblasts and collagen. Astrocytes are the scar forming cell in the CNS. (Description By:Margaret Grunnet, M.D. ) (Image Contrib. by:Margaret Grunnet, M.D. UCHC )