(2) Changes in defecation habits. Including changes in stool time and frequency, constipation or unexplained diarrhea. Especially when constipation and diarrhea recur repeatedly or cause abdominal pain, we should be more vigilant. (3) Abnormal stool shape. Normal feces should be cylindrical, but if polyps are in the colon cavity and oppress feces, they are often thin or flat when discharged, and sometimes there are blood stains attached.
Different types of polyps and polyps with different causes will have special clinical manifestations. For example, patients with inflammatory polyp often have chronic diarrhea, mucous stool and bloody stool caused by chronic inflammatory diseases of colon, and also have chronic inflammatory manifestations such as fever, anemia and emaciation. Patients with lymphoma have chronic fever and gastrointestinal bleeding. Carcinoid can lead to carcinoid syndrome.