The colon is part of the body's digestive system. The digestive system removes and processes nutrients (vitamins, minerals, carbohydrates, fats, proteins, and water) from foods and helps pass waste material out of the body. The digestive system is made up of the esophagus, stomach, and the small and large intestines. The first 6 feet of the large intestine are called the large bowel or colon. The last 6 inches are the rectum and the anal canal. The anal canal ends at the anus (the opening of the large intestine to the outside of the body).
Age and health history can affect the risk of developing colon carcinoma .
Risk factors include the following:
- Age 50 or older.
- A family history of carcinoma of the colon or rectum.
- A personal history of carcinoma of the colon, rectum, ovary, endometrium, or breast.
- A history of polyps in the colon.
These and other symptoms may be caused by colon carcinoma
Other conditions may cause the same symptoms. A doctor should be consulted if any of the following problems occur:
- A change in bowel habits.
- Blood (either bright red or very dark) in the stool.
- Diarrhea, constipation, or feeling that the bowel does not empty completely.
- Stools that are narrower than usual.
- Frequent gas pains, bloating, fullness, or cramps.
- Weight loss for no known reason.
- Feeling very tired.
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Source : www.coloncarcinoma.com/