Gastroenterology is the medical specialty devoted to the study of the digestive system, its disorders and abnormalities, as well as their treatment. The discipline is thus interested in different organs (the esophagus, the small intestine, the colon, the rectum, the anus), but also in the digestive glands (the liver, the bile ducts, the pancreas). gastroenterology encompasses two main subspecialties (which certain doctors practice specifically): hepatology (which concerns pathologies of the liver) and proctology (which concerns pathologies of the anus and rectum). enterologist is most often consulted for: heartburn (gastroesophageal reflux); constipation; bloating; diarrhea; or abdominal pain.