brown induration


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induration

 [in″du-ra´shun]
1. the quality of being hard.
2. the process of becoming hard; called also hardening and sclerosis.
3. an abnormally hard spot or place. adj., adj indura´tive.
black induration the hardening and pigmentation of the lung tissue seen in coal workers' pneumoconiosis.
brown induration
1. a deposit of altered blood pigment in the lung in pneumonia.
2. increase of the pulmonary connective tissue and excessive pigmentation, due to chronic congestion from valvular heart disease, or to anthracosis. See also gray induration.
cyanotic induration hardening of an organ from chronic venous congestion.
granular induration cirrhosis.
gray induration induration of lung tissue in or after pneumonia, without the pigmentation seen in brown induration.
red induration red, congested lung tissue seen in idiopathic pulmonary fibrosis.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
A gross finding in any chronic condition with long-standing transalveolar leakage of blood, often accompanied by increased pulmonary venous pressure
Aetiology CHF, Goodpasture’s disease, hemosiderosis, mechanical obstruction of pulmonary vein, mitral valve stenosis
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

brown induration

A pathological description of lung tissue featuring acute congestion and water-logging (oedema) with blood in the air sacs (alveoli).
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005