The symptoms of ascending colon cancer mainly include the following: First, change of bowel habits: irritation symptoms of intestines and change of bowel habits, which may include constipation, diarrhea, or alternating constipation and diarrhea, wanting to defecate but unable to do so, feeling of anal swelling or vague pain in the abdomen. Second, blood in stool: caused by tumor rupture and bleeding, sometimes bright red blood, sometimes dark red blood, usually not much bleeding, and intermittent. Thirdly, intestinal obstruction: intestinal obstruction is one of the main manifestations of late stage colon cancer. Fourthly, abdominal mass: when the tumor grows to a certain degree, a mass will be touched in the abdomen, among which the abdominal mass of right colon cancer is the most common. Fifth, systemic symptoms: anemia, emaciation, fever, general weakness, etc. Sixth, advanced cancer manifestations: advanced colon cancer manifestations may also include lumbosacral pain, sciatica, closed-hole neuralgia, vaginal bleeding, hematuria, rectovaginal fistula, rectal bladder fistula, urinary retention, ascites, etc.