avascular necrosis(redirected from Avn)
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necrosis resulting from deficient blood supply.
Farlex Partner Medical Dictionary © Farlex 2012
a·sep·tic ne·cro·sis(ā-sep'tik nĕ-krō'sis)
Death or decay of tissue due to local ischemia in the absence of infection.
Synonym(s): avascular necrosis.
Synonym(s): avascular necrosis.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
necrosis(ne-kro'sis) ('sez?) plural.necroses [Gr. nekrosis, (state of) death]
The death of cells, tissues, or organs. Necrosis may be caused by insufficient blood supply, pathogenic microorganisms, physical agents such as trauma or radiant energy (electricity, infrared, ultraviolet, roentgen, and radium rays), and chemical agents acting locally, acting internally after absorption, or placed into the wrong tissue. Some medicines cause necrosis if injected into the tissues rather than the vein, and some, such as iron dextran, cause necrosis if injected into areas other than deep muscle or vein. See: illustration; gangrene; mortificationnecrotizing (nek'ro-tiz?ing), adjective
acute esophageal necrosisNecrotizing esophagitis.
acute tubular necrosisAbbreviation: ATN
Acute damage to the renal tubules; usually due to ischemia associated with shock.See: acute renal failure
Necrosis due to inadequate blood flow to a body part.
Necrosis without infection, e.g., as a result of trauma or drug use.
Balser fatty necrosisSee: Balser fatty necrosis
Necrosis with soft, dry, cheeselike formation, seen in diseases such as tuberculosis or syphilis. Synonym: cheesy necrosis
Necrosis that affects only the center of a body part.
cheesy necrosisCaseous necrosis.
Necrosis occurring esp. in infarcts. Coagulation occurs in the necrotic area, converting it into a homogeneous mass and depriving the organ or tissue of blood.Synonym: fibrinous necrosis; ischemic necrosis
Necrosis caused by liquefaction of tissue due to autolysis or bacterial putrefaction. Synonym: liquefactive necrosis
dry necrosisDry gangrene.
Necrosis due to an embolic occlusion of an artery.
Necrosis of fatty tissues, seen, for example, in patients with severe cases of pancreatitis.
fibrinous necrosisCoagulation necrosis.
Necrosis in small scattered areas, often seen in infection.
Necrosis forming a dry rubbery mass resulting from syphilis.
ischemic necrosisCoagulation necrosis.
liquefactive necrosisColliquative necrosis.
Necrosis of cells in the tunica media of an artery.
Necrosis with softening and wetness of the dead tissue.
postpartum pituitary necrosisSheehan syndrome.
Necrosis due to bacterial decomposition.
Necrosis caused by radiation exposure.
subcutaneous fat necrosis of newborn
An inflammatory disorder of unknown cause affecting fat tissue that may occur in the newborn at the site of application of forceps during delivery and occasionally in premature infants.
Necrosis affecting only the outer layers of bone or any tissue.
Necrosis due to thrombus formation.
Necrosis affecting an entire organ or body part.
Zenker necrosisSee: Zenker, Friedrich Albert von
Medical Dictionary, © 2009 Farlex and Partners
avascular necrosisDeath of a tissue, especially bone, as a result of deprivation of its blood supply. Avascular necrosis of bone is often referred to as osteonecrosis.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005