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Colon cancer develops, as the name itself suggests, in the colon. There is also the rectal cancer when the cancer develops only in the few last inches of this digestive organ and together they are called colorectal cancer.

The people who suffer from colon cancer usually experience a change in their bowel movements, which includes constipation and diarrhea, as well as the change in the stool consistency, which is present for more than a month. Furthermore, blood in the stool, constant abdominal discomfort like cramps and gas, as well as general feeling of fatigue and unexplained weight loss, are also some of the signs of the colon cancer that should not be neglected. In most cases, the type of cancer in question does not show any symptom in the first stage but only later in the advanced stages, and for this reason it is important to regularly analyze the stool in order to prevent the development of colon cancer.

Causes of colon cancer

The exact culprit for the occurrence of the colon cancer is not found even though the process of the development of the cancer is well known when the cells mutate and start to multiply themselves in excessive amounts, thus forming the tumor. When the colon cancer is in question, the cells in the intestinal lining abnormally grow and after a couple of years, these cells may turn cancerous.

In most cases, polyps or the precancerous cells may develop into the colon cancer if they are not treated or removed timely. Nonpolypoid lesions are also precancerous cells, which are deeply recessed in the colon wall and for that reason, they are more difficult to be detected than the polyps, though they also should be removed promptly.Life expectancy for colon cancer

Whenever cancer is diagnosed, one wants to know about the life expectancy which, of course, depends on the stage of the cancer, as well as on the age and health of the affected person. When the colon cancer is detected in the first stage and when the cancerous cells spread to the central colon layers, the life expectancy is about 5 years in 95% of the cases. When the colon cancer is discovered in the second stage, the survival rate is 5 years in 73% of the cases, while in the third stage of the colon cancer, in about 45% of the cases it is 5 years. In the final fourth stage of the colon cancer, life expectancy is five years in only 8% of the cases.

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