<unk>  <unk> , also known as<unk>  breeder's lung, is a type of hypersensitivity pneumonitis. It can cause shortness of breath, fever, dry cough, chest pain, anorexia and weight loss, fatigue, and progressive pulmonary fibrosis (the most serious complication). It is triggered by exposure to avian proteins present in the dry dust of droppings or feathers of a variety of<unk> s. The lungs become inflamed, with granuloma formation. It mostly affects people who work with<unk> s or own many<unk> s.<unk>  is diagnosed based on symptoms, and how these get worse on exposure to avian proteins. Radiology can show damage to the lungs, which has a characteristic "ground glass" appearance. Bronchoscopy shows chronic inflammation, with biopsies showing lymphocytosis and granulomatous tissue.<unk>  may be treated with steroids such as prednisone to reduce inflammation, and removal of exposure to avian proteins. If pulmonary fibrosis has not occurred, treatments tend to be very effective.
Bird fancier's lung
Farmer's lung
Metsovo lung
Underwood's septa
Saber-sheath trachea
Surfer's knots
World Trade Center lung
Fiddler's neck