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Pathology General 8944ff3b

Which of the following is associated with hypersensitivity pneumonitis -

A
Silicosis
B
Asbestosis
C
Byssinosis
D
Berylliosis
High-Yield Explanation
Hypersensitivity pneumonitis Hypersensitivity pneumonitis describes a spectrum of immunologically mediated*, predominantly interstitial lung disorders caused by intense, often prolonged exposure to inhaled organic dust and related occupational antigens. Etiology: Inhalation of organic dust, most commonly spores of thermophilic fungi*. Depending on the occupation or exposure of specific antigen numerous names have been given to hypersensitivity pneumonitis. Farmer's lung → Thermophilic actinomycetes on mouldy hay or grain dust. Pigeon breeder's lung → Proteins from serum, excreta or feathers of the birds. Air conditioner lung (or Humidifier lung) → Thermophilic bacteria in heated water reservoirs. Bagassosis → Sugarcane bagasse Byssinosis → Cotton dust Maple-bark disease → Mouldy maple bark Mushroom-worker's lung → Mushroom compost dust Silo-filler's disease → Toxic fumes of NO & N2O due to fermentation of silage

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