Causes of unilateral clubbing

Causes of unilateral clubbing are:

  • Anomalous aortic arch
  • Aortic or subclavian artery aneurysm
  • Pulmonary hypertension with patent ductus arteriosus
  • Brachial arteriovenous aneurysm or fistula
  • Recurrent shoulder dislocation
  • Superior sulcus (Pancoast) tumor

Ref : Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition