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finger clubbingSwelling of the ends of the fingers so that the normal depression just behind the root of the nail is replaced by a convexity. The nails can be rocked slightly on their abnormally spongy beds. Finger clubbing occurs in various disorders such as lung cancer, BRONCHIECTASIS, CONGENITAL HEART DISEASE and CIRRHOSIS of the liver. It is associated with conditions in which the supply of oxygen to the tissues is poor and often accompanies CYANOSIS. Clubbing also affects the toes.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005