Gastroenterology is a branch of medicine concerned with digestive diseases. The practice of gastroenterology concentrates on the diagnosis and treatment of diseases involving the esophagus, stomach, small intestine and large intestine (colon), liver, gallbladder, and pancreas. This medical field is really a subspecialty of Internal Medicine as is, for example, cardiology, which deals with diseases of the heart.
Richard McGuire, M.D.