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Collagen-encapsulated coagulation necrosis in cerebral infarcts: a pathological study
M Yamazaki1, I Nakano, Y Morimatsu
1Department of Neuropathology, Tokyo Metropolitan Institute for Neuroscience, Japan.
Acta Neuropathologica
|January 1, 1996
Summary
Coagulation necrosis (CN) in cerebral infarcts is more common than previously thought. This study found cerebral CN persists due to early gel transformation and later calcification, not just encapsulation.
Area of Science:
- Neuropathology
- Histopathology
Background:
- Coagulation necrosis (CN) is a form of cell death characterized by eosinophilic tissue and preserved cell outlines.
- It is believed to result from protein denaturation and water loss, inhibiting autolysis.
Purpose of the Study:
- To investigate the occurrence and characteristics of coagulation necrosis in cerebral infarcts.
- To understand the progression and persistence mechanisms of cerebral CN.
Main Methods:
- Analysis of 150 autopsy cases with large cerebral infarction.
- Histopathological examination for coagulation necrosis, vascularization, collagen deposition, and crystal formation.
Main Results:
- Coagulation necrosis was observed in 11 of 150 cases (7.3%).
- Early stages (1 month survival) showed new vessels and Type I collagen.
- Late stages (>1 year survival) exhibited calcium and cholesterin crystals with dense collagenous encapsulation.
Conclusions:
- Cerebral coagulation necrosis occurs more frequently than generally recognized.
- Persistence of CN involves early gel transformation and later calcification, alongside incomplete encapsulation.