<prompt> One of the following condition is not associated with clubbing :Primary biliary cirrhosisChronic bronchitisCryptogenic fibrosing alveolitisCentral bronchiectasis  <response>: Answer is B Chronic bronchitis: Chronic bronchitis does not cause clubbing Some causes of finger clubbing Respiratory Cardiovascular Bronchial carcinoma, especially epidermoid squamous cell type major cause Cyanotic hea disease Chronic suppurative lung disese Subacute infective endocarditis Bronchiectasis Lung abscess Miscellaneous Empyema Congenital -- no disease Cirrhosis Pulmonary fibrosis e.g. cryptogenic fibrosing alveolitis Inflammatory bowel disease Pleural and mediastinal tumours e.g. mesothelioma Primary billiary cirrhosis Crvptogenic organizing pneumonia 