What are the signs & symptoms of colorectal cancer?

Often asymptomatic; this is why screening for colorectal cancer is so important. When symptoms occur, they include:-
•    New onset of abdominal pain
•    Bleeding from the rectum
•    Blood in or on the stool
•    A change in stool caliber or shape
•    A change in typical bowel habits, constipation, diarrhea
•    Weakness, anemia, weight loss, palpable mass, obstruction
•    Jaundice.