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Contraction band necrosis is a type of uncontrolled cell death unique to cardiac myocytes and thought to arise in reperfusion from hypercontraction, which results in sarcolemmal rupture.
It is a characteristic histologic finding of a recent myocardial infarction that was partially reperfused.
The name of the histopathologic finding comes from the appearance under the microscope; contraction bands are thick intensely eosinophilic staining bands that span the short axis of the myocyte. They can be thought of extra thick striae, typical of cardiac muscle and striated muscle.
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