<prompt> All of the following conditions are associated with clubbing except: March 2012Bronchogenic carcinomaChronic bronchitisEmpyemaBronchiectasis  <response>: Ans: B i.e. Chronic bronchitis Causes of clubbing Respiratory causes of digital clubbing includes bronchogenic carcinoma, asbestosis especially with mesothelioma, suppurative lung disease empyema, Bronchiectasis, cystic fibrosis, fibrosing alvelolitis etc. Finger clubbing is not a feature of COPD and should trigger fuher investigation for lung cancer, Bronchiectasis or fibrosis 