What is Colonoscopy？
A colonoscopy is an exam your doctor uses to look inside your large intestine for possible causes of things like abdominal pain, rectal bleedings, or changes in bowel habits. Colonoscopy are used to prevent colorectal cancer usually starting at age 50. During the procedure, the doctor puts a tube-like instrument called a colonscope into your rectum. It’s long but only about a half-inch across. It has a light and video camera on the tip so the doctor can see the lining of your colon and tell if there is any problem. During the exam, your doctor can uses a small snare in the colonoscope to take tiny samples of your colon for testing, which is called a biopsy. He can also use it take out abnormal growths called polyps.
Why Would You Get a Colonoscopy?
A colonoscopy is one of the best ways to spot or help prevent colon cancer. Some doctors may recommend your first colonoscopy at age 50, because most people who get colorectal cancer are older than this. Besides, colonoscopy is used to investigate other diseases of the colon, for