Colorectal cancer is hard to diagnose since any error in the belly section is assumed to be a digestive anomaly. A person should be highly alert during clear changes in his bowel habit, defecation and stool formation.
Sometimes the tumor gets too big and prevents bowel passing. This leads to frequent abdominal pain, obvious constipation and vomiting. This is one of the symptoms.
There would be a feeling that one has not passed his feces completely. The color of the stool will also tend to be blackish.
There would be occasional bleeding that will pass off as stool.
Sometimes, there is an acute iron loss from the body resulting in anemic patterns. This may be analyzed through pupils. There is frequent palpitation and drowsiness. Weakness is also a part of such a body.
Cancer is known to spread. Colorectal cancer spreads to the entire mid-section and affects liver clearly. There is a change in the belly lining that is visible. Due to liver problem, there is every chance of jaundice. If a jaundiced person shows the above symptoms, it may be assumed that he is suffering from colorectal cancer. Of course, for the final analysis, one has to undergo necessary tests.