#necrosis

• Acronecrosis — An irreversible destructive pathological process characterized by cell death and necrosis of tissues located within the distal extremities of the body (fingers and toes). This severe ischemic phenomenon is caused by the prolonged interruption of arterial blood flow, and is encountered in advanced stages of diabetic gangrene, severe frostbite, occlusive arterial thrombosis, or acute systemic vasculitis.
• Adenomalacia — A rare pathological condition characterized by the abnormal softening, loss of firm consistency, or structural degeneration of a gland or a lymph node. This clinical phenomenon usually occurs as a secondary consequence of severe chronic inflammatory processes, major vascular disorders (ischemia), or necrotizing infections that destroy the connective supporting stroma of the glandular organ.
• Fat necrosis — A destructive pathological process characterized by the cell death (necrosis) of adipose tissue, occurring as a result of physical trauma, local ischemia, surgical interventions, or enzymatic actions (such as in acute pancreatitis through lipase release). This cellular structural phenomenon leads to the formation of indurated nodules, oil cysts, or calcium deposits through the saponification of free fatty acids.
• Angionecrosis — A destructive structural pathological process consisting of necrosis, cell death, and disintegration of the walls of a blood vessel (artery or vein). This severe clinical phenomenon, often triggered by necrotizing vasculitis, virulent bacterial infections, direct toxic injuries, or well-defined prolonged ischemia, leads to a total loss of vascular lumen integrity, causing spontaneous massive hemorrhages or secondary occlusive thromboses.
• Anoxia — A grave pathological condition characterized by the complete absence of oxygen in the body's tissues, representing the terminal and most severe form of hypoxia. In clinical pathophysiology, this major structural deficiency blocks cellular respiration and energy production, causing rapid necrosis and irreversible damage in highly sensitive organs, such as the cerebral cortex and myocardium.
• Anthracnose — An infectious cryptogamic plant disease caused by various species of parasitic fungi (from the genera Colletotrichum, Gloeosporium, or Marssonina), structurally characterized by the appearance of blackish, brown, or sunken spots on leaves, stems, shoots, and fruits. This condition causes rapid necrosis of plant tissues, premature drying of the affected organs, and massive losses in agricultural crops of grapevine, beans, fruit trees, or vegetables.
• Anthracoid — Resembling coal, possessing the appearance, color, or structure of a coal pustule (anthrax) or displaying the exterior physical characteristics of anthracite. In a clinical medical sense, it describes a cutaneous lesion, a black ulceration, or a severe dermatological reaction that, through its geometric configuration and central necrotic hue, partially mimics the structural evolution of a pathogenic anthrax infection without being directly caused by that specific bacillus.
• Arterionecrosis — A destructive pathological process consisting of necrosis or cell death of the structural elements composing an arterial wall, particularly the muscular and elastic tunics. This severe condition leads to the loss of vascular integrity, favoring the appearance of aneurysms, spontaneous ruptures with massive hemorrhages, or occlusive thromboses.
• Autodigestion — A physiological or pathological process by which an organism, tissue, or cell destroys and digests its own structures or constituents under the action of endogenous proteolytic enzymes; a destructive cellular phenomenon associated with severe autophagy or enzymatic necrosis.
• Autopepsia — Spontaneous self-digestion of an organ's tissues (especially the gastric mucosa or the pancreas) caused by its own enzymatic secretions or digestive juices, due to pathological disruptions of cellular protective mechanisms or following post-mortem necrosis. In gastroenterology, this destructive structural phenomenon forms the basis for the onset of perforating peptic ulcers or acute necrotizing-hemorrhagic pancreatitis.
• Bacteriosis — A generic name given to infectious plant diseases caused by various species of phytopathogenic bacteria, manifested by necrotic spots, wilting, tumors, or rot of plant tissues. In an agronomic sense, a bacteriosis severely affects agricultural crops and fruit trees, transmitting rapidly through water, contaminated tools, or animal vectors, drastically reducing productivity.