Neumonitis por hipersensibilidad fibrótica: reporte de casos y propuesta de fuentes de exposición en nuestro medio

An excessive immune response to inhaled antigens in some susceptible individuals can cause hypersensitivity pneumonitis, considered a prevalent entity among diffuse interstitial lung diseases. A radical change the classification of this undervalued has recently been proposed. In report we describe clinical and radiological characteristics three cases fibrotic pneumonitis: bird keeper's lung, feather pillow chemical alveolitis. table is shown with probable occupations or risk exposures our environment an updated review subject carried out.