What causes abdominal lymph node enlargement?

There are many causes of abdominal lymph node enlargement, such as acute mesenteric lymphadenitis, pancreatitis, acute appendicitis, cholecystitis, gastric cancer, pancreatic cancer, ulcerative colitis, digestive tract ulcer perforation, Crohn's disease, etc. It is recommended that patients see a doctor in time and treat after clarifying the cause.