Proctitis and internal haemorrhoids with blood in the stool do not directly cause bowel cancer. If there is a combination of symptoms such as change in bowel habits, purulent stools, mucus and blood in the stool, abdominal pain and bloating, and weight loss, it is recommended to visit the hospital as soon as possible to improve the colonoscopy and clarify the intestinal condition. And because of a history of proctitis and internal haemorrhoids with blood in the stool, regular review at the hospital is also required to assess changes in the condition.