Colorectal cancer is originating in the rectum or colon. The colon, the last part of the large intestine and rectum are part of the digestive system according to the National Library of Medicine of the United States one of every 15 people suffering from colon cancer. In turn, the American Cancer Society about 100,000 projected new cases of this cancer will be diagnosed each year.
According colon cancer progresses, we talk about the stages of this disease, which are classified from Stage I the most advanced to Stage IV them. It is extremely important that your doctor knows what stage is appropriate, so that you receive the correct treatment. The stages of colon cancer are:
- The cancer is confined to the inner walls of the colon or rectum.
- The cancer has penetrated the walls of the colon or rectum but has not reached the lymph nodes.
- The cancer has spread to lymph nodes but not to other organs of the body.
- IV The cancer has spread to other organs of the body.
Causes and risk factors
As in almost all types of cancer, it has not found a specific cause for colon cancer, but there and hereditary risk factors to which can increase the chances that you will develop this cancer. Among them: Polyp’s abnormal cells growing on the inner walls of the colon if not removed, they can become malignant.
Age the likelihood of developing colon cancer increases with age. Nine out of 10 people with colon cancer are over 50 years. Medical history – previous polyps or other diseases of the small or large intestine, previous diagnosis of any cancer or family history of colon cancer instances. Ascendancy People of African or Jewish descent from Eastern Europe, have a higher incidence of colon cancer present.