1. Necrosis due to obstruction, loss, or diminution of blood supply; it may be localized to a small area or involve an entire extremity or organ (such as the bowel), and may be wet or dry.mortification; 2. Extensive necrosis from any cause, e.g., gas gangrene. [G. gangraina, an eating sore, fr. grao, to gnaw]
arteriosclerotic g. dry g. resulting from sclerotic changes in the arteries, with subsequent occlusion, as in the aged.
cold g. dry g
cutaneous g. g. of the skin characterized by sloughing; may occur in shingles or in any acute infection that interferes with superficial circulation.
decubital g. decubitus ulcer
diabetic g. g. resulting from arteriosclerosis associated with diabetes.
disseminated cutaneous g. dermatitis gangrenosa infantum
dry g. a form of g. in which the involved part is dry and shriveled.cold g., mummification necrosis, mummification (1) ;
embolic g. g. resulting from obstruction of an artery by an embolus.
emphysematous g. gas g
Fournier's g. Fournier's disease
gas g. g. occurring in a wound infected with various anaerobic sporeforming bacteria, especially Clostridium perfringens and C. novyi, which cause crepitation of the surrounding tissues, due to gas liberated by bacterial fermentation, and constitutional septic symptoms.clostridial myonecrosis, emphysematous g., emphysematous phlegmon, gangrenous emphysema, gas phlegmon, progressive emphysematous necrosis;
hemorrhagic g. 1. hemorrhagic infarct 2. g. occurring rarely in advanced meningococcal septicemia.
hospital g. decubitus ulcer
hot g. g. following inflammation of the part.
Meleney's g. Meleney's ulcer
moist g. wet g
nosocomial g. decubitus ulcer
Pott's g. senile g
presenile spontaneous g. g. occurring in middle life as a result of thromboangiitis obliterans.
pressure g. decubitus ulcer
progressive bacterial synergistic g. Meleney's ulcer
senile g. dry g. occurring in the aged in consequence of occlusion of an artery, particularly affecting the extremities.Pott's g;
spontaneous g. of newborn g. due to vascular occlusion of unknown cause, usually in marasmic or dehydrated infants.
static g. moist g. due to obstruction in the return circulation.venous g;
symmetrical g. g. affecting the extremities of both sides of the body; it is seen particularly in severe arteriosclerosis, myocardial infarction, and ball-valve thrombus.
thrombotic g. g. due to occlusion of an artery by a thrombus.
trophic g. trophic ulcer
venous g. static g
wet g. ischemic necrosis of an extremity with bacterial infection, producing cellulitis adjacent to the necrotic areas.moist g;
white g. death of a part accompanied by the formation of grayish white sloughs.leukonecrosis;
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