Gastroenterology includes many diseases, such as the very common gastritis, including acute gastritis, chronic gastritis, and peptic ulcers, including gastric and duodenal ulcers, and gastric cancer. Intestinal problems, such as intestinal tuberculosis, tuberculous peritonitis, and inflammatory bowel disease, including ulcerative colitis, Crohn’s disease, and colorectal cancer. There are also functional gastrointestinal diseases, such as functional dyspepsia, irritable bowel syndrome, and chronic diarrhea. Liver diseases, such as chronic hepatitis, including viral hepatitis B, viral hepatitis C, cirrhosis, alcoholic liver, primary liver cancer, pancreatic cancer, pancreatitis, gastrointestinal bleeding and other diseases.