Necrosis - types of necrosis differ primarily by the type of tissue…
Necrosis - types of necrosis differ primarily by the type of tissue affected
lacks a line of demarcation
characterized y cold, swollen, pulseless area in which liquifaction is occuring
foul odour indiccates bactyerial action
spread is rapid and symptomatic symptoms occur
cutting off arterial blood flow to the extremities. ex. frost bite, small artery disease
characterized by slow spread, absence of infection, and line of demarkation around the affected area
due to Clostridia infection - usually in large traumatic wounds
organisms digest healthy and damaged tissue and gas bubbles appear
bacteria such as
has its own history and terminology,
area is mostly solid and composed of denatured protiens
in contrast to
2) leading to the loss of plasma membrane's ability to maintain electrochemical gradiants
3) resulting in an influx of calcium ions and mitochondrial dysfunction
1) ischemic cellular injury
4) and then degradation of plasma membranes and nuclear structure.
seen in the ischemic heart and kidney
looks like egg whites.
when the dissolution of dead cells occurs very quickly
a liquified area of lysosomal enzymes and dissolved tissue may result and form an abscess or cyst. tissue has pockets of liquid, bacteria, white cells and debris throughout it in cyst like sacs.
seen often in the brain
can result from a bacterial infection that triggers a localization of WBC's which can digest dead cells resulting in liquid debris
looks like cheese.
Technically, it is a sub-class of coagulative necrosis