Cryptogenic organising pneumonia (COP)
COP is a swelling of the small airways in your lung. It is also sometimes called bronchiolitis obliterans organising pneumonia or BOOP.
It has symptoms that can closely mimic a pneumonia infection, such as fever, tiredness, coughing and breathlessness.
Because this condition is rare, it may take some time to get a diagnosis. Your doctor will need to consider other possible causes of your symptoms. You may need to have a few tests and you might need to see a specialist.
COP is usually treated with corticosteroids or antibiotics, and treatment is usually successful.
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