Rectal cancer is a common cancer, what are the obvious symptoms that rectal cancer patients will have? The care after surgery for cancer has an important role in the recovery of cancer patients. What should colorectal cancer patients pay attention to after surgery? 1. When the tumor grows to a certain time, patients will find the phenomenon of fresh blood flowing out when defecating and sticking together with stool. It can be seen that the obvious symptom of rectal cancer is blood in stool, and the patient’s defecation habit will also change, sometimes but the shape of stool changes. Patients with blood in stool should undergo further examination to determine the cause of the disease as soon as possible. This symptom is most likely due to the growth of cancer tumor which prevents the normal physiological function in the intestine of the patient, and the doctor will consider the possibility of cancer. Abdominal pain is also an obvious symptom of rectal cancer, and most of the patients have abdominal pain, which is usually in the lower and middle abdomen, with different degrees of pain, mostly distension or hidden pain. 3. As the patient’s disease develops, some patients may have chronic signs of wasting, anemia or fever. Sometimes the patient may also have weakness, and is often accompanied by weight loss and fatigue, which are mostly related to nutritional deficiencies and blood in the stool.