Causes of Clubbing

Congenital or familial (5–10%) AcquiredThoracic (~70%): • Lung cancer • Chronic suppurative conditions: pulmonary tuberculosis, bronchiectasis, lung abscess, empyema, cystic fibrosis, Mesothelioma, Pulmonary fibrosis • Cardiovascular: • Cyanotic congenital heart disease , Infective endocarditis, Av shunts, Atrial myxoma •Gastrointestinal: Cirrhosis, Inflammatory bowel disease •Others: Thyrotoxicosis (thyroid acropachy)