MNEMONIC FOR CAUSES OF CLUBBING--->
C...Cyanotic heart diseases and cystic fibrosis;
L...Lung cancer and lung abscess;
U...Ulcerative colitis;
B...Bronchiectasis;
B...Benign mesothelioma;
I...Infective endocarditis, idiopathic pulmonary fibrosis, idiopathic, and inherited;
N...Neurogenic tumors; and
G...Gastrointestinal diseases (e.g., cirrhosis and regional enteritis)
