Intestinal tumors and irritable bowel syndrome can be distinguished by etiology, clinical symptoms, and auxiliary examinations. 1. Etiology Intestinal tumors are generally divided into benign and malignant, benign intestinal tumors are most commonly found in lipoma and fibroma. There are more types of malignant tumors, such as rectal cancer or colon cancer. It may be caused by genetic factors, dietary factors, environmental factors and so on. Irritable bowel syndrome belongs to dysfunctional disease, usually no obvious organic lesions occur, but it is related to allergy, intestinal inflammation, emotional stimulation and so on. 2.Clinical symptoms People with intestinal tumors may not have obvious symptoms in the early stage, with the gradual development of the disease, there may be changes in bowel movements and habits, accompanied by abdominal masses, bloody stools, abdominal pain and other symptoms, which are gradually aggravated with the progression of the tumor. Patients with irritable bowel syndrome tend to have recurrent abdominal pain, abdominal distension alternating with diarrhea. Abdominal pain is especially worse after eating and relieved after defecation. 3. Colonoscopy results Patients with intestinal tumors can see obvious lumps during examination, and sometimes the surface will be broken and bleeding phenomenon, while patients with irritable bowel syndrome usually have no obvious performance during examination. If you want to accurately distinguish whether you have intestinal tumor or irritable bowel syndrome, it is recommended that you also make a comprehensive judgment after the doctor’s interview, taking into account the medical history, symptoms, and the results of relevant examinations.