Clubbing Mnemonic

So I think you pretty much look for finger/toe clubbing on examination of any system. Today I was going over some past exams and were we trying to remember some of the causes of clubbing (since there's a ton of them and the mechanisms behind clubbing are not all known). For anyone out there who is looking for a clubbing mnemonic, this one's gold! Got this from a our super awesome 3rd year tutors =) =)

CLUBBING (with ABCDEF for lung diseases)

• C yanotic heart disease
  
• L ung diseases
• A bscess
• B ronchiectasis
• C ystic fibrosis
• D on't say COPD!!!
• E mpyema
• F ibrosis
  
• U lcerative colitis + Crohn's (Inflammatory Bowel Diseases)
• B iliary cirrhosis
  
• B irth defect
  
• I nfective endocarditis
  
• N eoplasm (lung cancer, mesothelioma)
  
• G I malabsorption syndromes (Coeliac disease)