Colorectal cancer, also called colon cancer or large bowel cancer includes cancerous growth in the colon and rectum. Its approximately 655,000 or more deaths per year worldwide, is the third most common form of cancer and the second largest cause of cancer-related deaths in the Western world.

What are the symptoms?
Vague convened the first symptoms of colon cancer, such as bleeding, weight loss and fatigue (tiredness). Local (bowel) symptoms are rare; the tumor grew to a size larger. Generally speaking, it is the nearest cancer anus, the more bowel symptoms there will be.

People with high risk for colorectal cancer include those with:
  1. A strong family history of colon cancer or other cancers in the first grade.
  2. A previous history of adenomas or cancer of the colon.
  3. A history of chronic ulcerative colitis or Crohn's disease.

One of the most important factors in the pathogenesis of large bowel cancer can be inherited susceptibility to colorectal cancer. Of first-degree relatives of patients with colorectal cancer have an increased risk of about 3-4 times for the development of colorectal cancer, compared with the average person on the street. Patients with colorectal cancer have a previous 3-4 times greater risk of developing a second cancer and colon and then the life of the monitoring in these patients is important.

Patients with adenomas and particularly those with familial Adenomatous polyposis (a genetic disease in which hundreds or thousands of adenomas may occur), are at increased risk for cancer formation of polyps is not completely removed. Patients with ulcerative colitis and Crohn's disease have increased risk of developing colon cancer, especially if the disease has existed for more than 10 years.

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