Necrosis

: For chilean thrash metal band, check Necrosis (band)

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Necrosis (in Greek Νεκρός = Dead) is the name given to unprogrammed death of cells/living tissue (compare with apoptosis - programmed cell death). There are many causes of necrosis including injury, infection, cancer, infarction, inflammation and so on. Necrosis is caused by special enzymes that are released by lysosomes.

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There are four distinctive morphologic patterns of necrosis:

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• Coagulative necrosis - typically seen in hypoxic environments.. Cell outlines remain after cell death and can be observed by light microscopy (e.g. myocardial infarction, infarct of the spleen)
• Liquefactive necrosis - is associated with cellular destruction and pus formation (e.g. pneumonia)
• Caseous necrosis - is a mix of coagulative necrosis and liquefactive necrosis (e.g. tuberculosis)
• Fatty necrosis - results from the action of lipases on fatty tissues (e.g. acute pancreatitis)
• Fibrinoid necrosis - caused by immune-mediated vascular damage. It is marked by deposition of fibrin-like proteinaceous material in arterial walls, which appears smudgy and acidophilic on light microscopy.
Necrosis: See also ►



 

Chile: The Republic of Chile is a country in South America occupying a long coastal strip between the Andes mountains and the Pacific Ocean. It shares borders with Argentina to the east, Bolivia to the northeast and Peru to the north....

Thrash metal: Thrash metal is a subgenre of heavy metal music....

Band: Band may mean:...