Alveolitis is the accumulation of inflammatory and immune effector cells within the alveolar walls and spaces.
Extrinsic allergic alveolitis is a lung disorder resulting from repeated inhalation of organic dust, usually in a specific occupational setting. In the acute form, respiratory symptoms and fever begin eighteen hours after exposure to the dust. The chronic form is characterized by gradual changes in the lung tissue associated with four years of exposure to the irritant. This may eventually lead to Interstitial lung disease.
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