Respiratory 

bronchial carcinoma

Respiratory infection- Bronchiectasis, Lung abscess

Fibrosing alveolitis

Asbestosis

Cystic fibrosis

Cardiac

Subacute bacterial endocarditis

Congenital cyanotic heart disease

Others

inflammatory bowel diseases

Crohn’s > UC)

Thyrotoxicosis

Biliary cirrhosis