Hypersensitivity pneumonitis

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Bronchoscopy

Respiratory system

Extrinsic allergic alveolitis; Farmer's lung; Mushroom picker's disease; Humidifier or air-conditioner lung; Bird breeder's lung

Acute hypersensitivity pneumonitis may have the following symptoms:

• Cough
• Fever
• Chills
• Shortness of breath
• Malaise (feeling ill)

Chronic hypersensitivity pneumonitis may have the following symptoms:

• Breathlessness, especially with exertion
• Cough, often dry
• Loss of appetite
• Unintentional weight loss

Crackles (rales) may be heard when a stethoscope is used to examine the chest.

Tests may include the following:

• Chest x-ray
• Pulmonary function tests
• CBC
• Hypersensitivity pneumonitis antibody panels
• Aspergillus precipitins test
• High-resolution CT scan of the chest
• Bronchoscopy with washings and biopsy
• Video-assisted or open-lung biopsy

Review Date: 02/01/2005
Reviewed By: Allen J. Blaivas, D.O., Division of Pulmonary and Critical Care Medicine, UMDNJ-New Jersey Medical School, Newark, NJ. Review provided by VeriMed Healthcare Network.