What are the common diseases in gastroenterology?

Common diseases in gastroenterology mainly include: 1. Gastric diseases: such as acute gastritis, chronic gastritis, atrophic gastritis, gastric ulcer, etc., with symptoms that may include stomach pain, abdominal distension, acid reflux, nausea, and so on. 2. Intestinal diseases: such as irritable bowel syndrome, chronic diarrhea, constipation, ulcerative colitis, etc., commonly presenting with abdominal pain, bloating, abnormal bowel movements, etc. 3. Hepatobiliary diseases: including fatty liver disease, viral hepatitis, cirrhosis, etc., symptoms may include pain in the liver area, jaundice, fever, etc. 4. Pancreatic diseases: such as acute pancreatitis, chronic pancreatitis, with main symptoms including abdominal pain, nausea, vomiting, etc. 5. Gastrointestinal tumors: such as gastric cancer, esophageal cancer, colon cancer, etc., which may be asymptomatic in early stages and present with symptoms such as pain and weight loss in advanced stages. These diseases not only affect patients' quality of life but may also threaten their lives, so early detection and treatment are essential.