What Happens
Cancer is the growth of abnormal cells in the body. These extra
cells grow together and form masses, lumps, or tumors. In
colorectal cancer, these growths usually start as
harmless (benign) polyps in the
large
intestine
(colon or rectum).
Colon polyps are common and most do not cause
problems. However, if polyps are not detected and removed, some of them can
turn into cancer.
If the cancer is allowed to continue growing, it eventually will
invade and destroy nearby tissues and then spread farther. Colorectal cancer
spreads first to nearby lymph nodes. From there it may spread to other parts of
the body, usually to the liver. It may also spread to the lungs, bones, or
brain.
Metastatic or recurrent colorectal cancer occurs when
cancer cells travel, through either the bloodstream or the
lymph
system, to other parts of the body and continue
to grow in their new location. Recurrent colorectal cancer occurs when the
cancer begins to grow again months or years after treatment.
How colorectal cancer will affect your life span depends on the
stage of your cancer. A cancer's stage depends on how
far it has spread.
The 5-year survival rate for cancer that has spread to other parts
of the body is 10%.1 The 5-year survival rate is the
percentage of people who are still alive 5 years or longer after their cancer
was discovered. It is important to remember that this is only an average.
Everyone is different, and these numbers do not necessarily show what will
happen to you.