Gangrene is dead tissue (necrosis) consequent to ischemia. In the image above, we can see a black area on half of the big toe in a diabetic patient. This black area represents necrosis—dead tissue—in fact, gangrene of the big toe.

Is Necrotizing the same as gangrene?

It quickly can become life-threatening. You may go into shock and have damage to skin, fat, and the tissue covering the muscles. (This damage is called gangrene.) Necrotizing fasciitis can lead to organ failure and death.

What type of necrosis is gangrene?

Gangrenous necrosis can be considered a type of coagulative necrosis that resembles mummified tissue. It is characteristic of ischemia of lower limb and the gastrointestinal tracts. If superimposed infection of dead tissues occurs, then liquefactive necrosis ensues (wet gangrene).