If there is any reason to suspect colon or rectal cancer,
based on symptoms or screening tests, your doctor may order additional testing
People with colorectal
cancer often become anemic because of bleeding from the tumor.
The doctor will remove a small
piece of tissue and send it to the lab where it is examined under a microscope
to see if cancer is present.
You will simply lie back on
a table while a kind of wand is moved over your skin, using ultrasound waves to
produce a picture of the inside of your body.
CT scan (computed tomography):
uses x-rays to take detailed pictures.
MRI (magnetic resonance imaging):
displays a cross-section of the body using radio waves and strong magnets.
Angiography takes place by
moving a tube through a blood vessel. Then a dye is injected and a series of
x-ray pictures is taken.