Colon cancer

What is Colon cancer?

Colorectal cancer (also known as colon cancer, rectal cancer or bowel cancer) is the development of cancer in the colon or rectum (parts of the large intestine). It is due to the abnormal growth of cells that have the ability to invade or spread to other parts of the body. Signs and symptoms may include blood in the stool, a change in bowel movements, weight loss, and feeling tired all the time.

Risk factors for colorectal cancer include lifestyle, older age, and inherited genetic disorders. Genetic disorders only occur in a small fraction of the population. A diet high in red, processed meat, while low in fiber increases the risk of colorectal cancer. Other diseases such as inflammatory bowel disease, which includes Crohn's disease and ulcerative colitis, can increase the risk of colorectal cancer. Some of the inherited genetic disorders that can cause colorectal cancer include familial adenomatous polyposis and hereditary non-polyposis colon cancer; however, these represent less than 5% of cases. It typically starts as a benign tumor, often in the form of a polyp, which over time becomes cancerous.

Bowel cancer may be diagnosed by obtaining a sample of the colon during a sigmoidoscopy or colonoscopy. This is then followed by medical imaging to determine if the disease has spread. Screening is effective for preventing and decreasing deaths from colorectal cancer. Screening is recommended starting from the age of 50 to 75. Their general use is not recommended for this purpose, however, due to side effects.

Treatments used for colorectal cancer may include some combination of surgery, radiation therapy, chemotherapy and targeted therapy. Cancers that are confined within the wall of the colon may be curable with surgery while cancer that has spread widely are usually not curable, with management focusing on improving quality of life and symptoms. Five year survival rates in the United States are around 65%. Globally, colorectal cancer is the third most common type of cancer making up about 10% of all cases. It is more common in developed countries, where more than 65% of cases are found. It is less common in women than men.

Questions and answers on "Colon cancer"

Can a colonoscopy actually increase a persons chances of developing colon cancer? I had a colonoscopy 10 years ago at the age of 58. I had a small...

doctor1 MD

Hi and welcome to HCM. Thanks for the query.
And what are strong sympotoms of colon cancer? colon cancer symptoms are very nonspecific and it is...

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yes doctor,my cousin bro is suffering from colon cancer now he is at 4th stage .and a bag is also attached to his colon.but now he is getting...

doctor1 MD

Hi and welcome to HCM. Thanks for the query.
it is hard to predict the right survival period but prognosis is poor. Creatinine isnt important in...

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hi: I need to have a colonoscopy to evaluate probable colon cancer but I m unable to find anyone to do an unsedated exam (allergic to the...

doctor1 MD

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Please discuss with your doctor for alternative pain relief solutions and it might be possible to get through the...

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