One of the following condition Is not associated with clubbing
Chronic bronchitis does not cause clubbing Pulmonary causes of clubbing: primary and metastatic lung cancer bronchiectasis asbestosis sarcoidosis lung abscess cystic fibrosis tuberculosis mesothelioma other causes include inflammatory bowel disease,infective endocarditis,cyanotic congenital hea disease ,hepatic cirrhosis etc
Primary biliary cirrhosis
Chronic bronchitis
Ciyptogenic fibrosing alvcolitis
Central bronchiectasis
Respiratory system