A hard bump on the stomach with significant pain when touched is considered more likely to occur from a disease of the abdominal organs. If it occurs in the right upper abdomen, in elderly male patients with a history of chronic alcohol consumption or chronic viral hepatitis. In this case, liver disease is more likely to occur, and liver ultrasound or liver enhancement CT should be performed first. For patients with early diagnosis, surgery should also be the treatment of choice. Other diseases of the intestine, mainly of the colon, may present as localized masses. Patients may also experience significant pain with abnormal bowel movements, including blood in the stool, unformed stools, or alternating diarrhea and constipation. Patients may also have significant loss of appetite and weight loss, and should undergo fiberoptic colonoscopy promptly. Tumor with plasma membrane invasion will cause pain, and if obstruction occurs, it will also induce pain.