How we can classify necrosis with example?

When your body’s cells die of necrosis, they form different patterns and appearances. The dead cells appear one of six ways. These patterns include:

1. Coagulative necrosis-
With coagulative necrosis, the dead cells remain firm and look normal for days after death. Lack of blood flow or oxygen to any part of your body except your brain can cause coagulative necrosis.

2. Liquefactive necrosis-
With liquefactive necrosis, the dead cells partially or completely dissolve within hours of death. Then they transform into a thick, sticky liquid. The cells sometimes appear creamy yellow because pus is forming. Infections and lack of oxygen to your brain can cause liquefactive necrosis.

3. Fat necrosis-
With fat necrosis, damaged cells release enzymes, causing them to turn to liquid. The liquid cells combine with calcium, creating chalky, white deposits on the cells. Acute pancreatitis is the most common cause of fat necrosis. It can also occur in breast tissue.

4. Caseous necrosis-
With caseous necrosis, the dead cells look white and soft. They’ve been described as looking like cheese — the word caseous means “cheese-like.” Caseous necrosis is uniquely seen in the infectious lung disease tuberculosis.

5. Fibrinoid necrosis-
With fibrinoid necrosis, the dead cells appear pink and lack structure. This is because plasma proteins (fibrins) are leaking out of your blood vessel walls. Fibrinoid necrosis occurs when an autoimmune disease or infection damage your blood vessels.

6. Gangrenous necrosis-
With gangrenous necrosis, your skin appears black and is beginning to rot. Lack of blood flow to your legs can cause gangrenous necrosis. It can sometimes affect your arms and fingers too.