<prompt> Which of the following is not a coagulative necrosis-Myocardial infarctKidney infarctBrain infarctAdrenal infarct  <response>: Tuberculosis is characterized by caseous necrosisCaseous necrosis is a variant of coagulative necrosis.Difference bw caseous necrosis and coagulative necrosisCaseous necrosis is so called because of its cheesy white appearance.In contrast to coagulative necrosis where tissue architecture is maintained, in caseous necrosis, the tissue architecture is completely obliteratedGangreneGangrene is a form of necrosis characterized by both liquefactive and coagulative necrosis.It is more a clinical diagnosis rather than a true pattern of cell death.Most commonly it occurs on a limb which has lost its blood supply and undergoes coagulative necrosis.Sometimes the tissue changes lead to desiccation and mummification and this gangrene is termed dry gangrene.If a bacterial superinfection occurs liquify active necroses supervene causing a wet gangrene. 