Colorectal
Cancer
Colorectal
cancer is a malignant disease occurring in the colon or the
rectum. The
American Cancer Society's 2003 statistics predict that
approximately 1 in 17 people will develop colorectal cancer, the
third leading cancer in the United States, responsible for
approximately 10% of cancer deaths. About 135,000 people
are diagnosed with this malignancy every year. Cancer that
begins in the colon is called colon cancer, and cancer that
begins in the rectum is called rectal cancer. A Cancer that
affects either of these organs may also be called
colorectal cancer.
Risk
factors for Colorectal Cancer:
The
following risk factors increase a person's chances of developing
colorectal cancer-
-
Age-.
Colorectal cancer is more likely to occur as people get
older. This disease is more common in people over the age of
50. However, colorectal cancer can occur at younger age in
rare cases.
-
Diet-
Colorectal cancer seems to be associated with diets that are
high in fat and calories and low in fiber..
-
Polyps-
Polyps are benign growths on the inner wall of the colon and
rectum. They are fairly common in people over age 50. Some
types of polyps increase a person's risk of developing
colorectal cancer. There
are several types of polyps. The most common types of polyps
include hyperplastic polyp, tubular adenoma, and villous
adenoma. Hyperplastic polyps are not strongly associated
with cancer; however, adenomas are considered the precursor
lesion for most colorectal cancers and therefore their
removal is part of a cancer prevention routine. A
rare, inherited condition, called familial polyposis, causes
hundreds of polyps to form in the colon and rectum. Without
treatment, familial polyposis is almost always leads
to colorectal cancer.
-
Personal
medical history- Women with a history of cancer of the
ovary, uterus, or breast have an increased chance of
developing colorectal cancer. A person with a previous
history of colorectal cancer may develop this disease a
second time.
-
Family
medical history- Parents, siblings, children of a person who
has had colorectal cancer are somewhat more likely to
develop this type of cancer themselves, especially if the
relative had the cancer at a young age. If many family
members have had colorectal cancer, the chances increase
even more.
-
Ulcerative
colitis-Ulcerative colitis is a condition is an inflammatory
disease of colon and increases the risk of colorectal
cancer.
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