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Medical Definition of Bronchiolitis fibrosa obliterans
1. Obstruction of bronchioles and alveolar ducts by fibrous granulation tissue induced by mucosal ulceration; the condition may follow inhalation of irritant gases (see silo-filler's lung) or may complicate pneumonia (see BOOP); associated with obstructive findings (see unilateral hyperlucent lung, Swyer-James syndrome). Synonym: bronchiolitis obliterans. (05 Mar 2000)