Gastroenterology is the branch of medicine that places its emphasis on the diagnosis and treatment of diseases related to digestive system and gastrointestinal tract. It studies the function and diseases of pancreas, esophagus, stomach, gallbladder, bile ducts, liver, small intestine, colon and rectum. It includes the treatment of diseases such as peptic ulcer disease, colitis, gallbladder and biliary tract disease, nutritional problems, colon polyps, gastrointestinal cancer, jaundice, cirrhosis of the liver, gastroesophageal reflux (heartburn), pancreatitis, Irritable Bowel Syndrome (IBS), etc. This book unravels the recent studies in the field of gastroenterology. The objective of this text is to give a comprehensive overview of the different areas of gastroenterology. The ever growing need for advanced medication and treatment is the reason that has fueled the research in this field in recent times. This book is a resource guide for experts as well as students.