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John Gormly, 77, of Newport Beach, California, had avoided colonoscopy screening for years. When his doctor gave him the option of the Shield blood test, he took it.
In addition to screening, colonoscopies can be used as a diagnostic tool—such as when symptoms of colorectal cancer are present blood in the stool, weight loss, and a change in bowel habits.
Colonoscopies are often used to diagnose colon polyp and colon cancer, [15] but are also frequently used to diagnose inflammatory bowel disease. [16] [17] Another common indication for colonoscopy is the investigation of iron deficiency with or without anaemia. The examination of the colon, to rule out a lesion contributing to blood loss, along ...
It will also not cover a virtual colonoscopy for screening or tests where the individual does not have any signs or symptoms, regardless of whether a person has a family history or other factors ...
Screening for colorectal cancer, if done early enough, is preventive, seeing as benign lumps called polyps in the colon and rectum are the start to almost all cases of colon cancer. These polyps can be identified and removed by screening tests like a colonoscopy, in which the whole colon is visible.
Repeat colonoscopy should be performed every one to three years. If polyps are very large, numerous, or increase in number rapidly, then surgery may be necessary. Surgery may also be warranted if CRC is suspected or confirmed. First-degree relatives of people with SPS have an increased risk of CRC, and should undergo early screening with ...