Flexible sigmoidoscopy, double-contrast barium enema
and endoscopic colonoscopy were the traditional imaging modalities for colorectal cancer (see Figure 2).
Alternatively, double-contrast barium enema
or colonoscopy should be performed every five to 10 years.
They are fecal occult blood tests, double-contrast barium enemas
, flexible sigmoidoscopies and colonoscopies.
Double-contrast barium enema
studies: effect of multiple reading on perception error.
(12) Double-contrast barium enema
(DCBE), CT, and scintigraphy involve a radiation burden to the patient, which is undesirable, since these patients are often young and since (because of the chronic course of IBD) repeated examinations are often necessary over a number of years.
Agency for Healthcare Research and Quality recommends colorectal screening for all average-risk adults aged 50 years and older using any of several methods including fecal occult blood testing every year, flexible sigmoidoscopy every 5 years, combined use of fecal occult blood testing every year and flexible sigmoidoscopy every 5 years, double-contrast barium enema
every 5 to 10 years, or colonoscopy every 10 years.
Diagnostic methods: Double-contrast barium enema
was the most commonly used diagnostic method, and 79 cancers were so found.
There are 2 types of barium enema exams: the single-contrast barium enema and the air-contrast or double-contrast barium enema
. These procedures use a series of x-ray images to diagnose problems in the colon and rectum.
TABLE Recommended options for screening average-risk individuals for colorectal cancer TEST OR PROCEDURE FREQUENCY * 3-card fecal occult blood test Annually Flexible sigmoidoscopy Every 5 years Double-contrast barium enema
Every 5 years Colonoscopy Every 10 years * Beginning at age 50 for men and women.
* Double-contrast barium enema
every 5 years is a screening option in average-risk patients.
A double-contrast barium enema
every 5 years has never been studied as a screening tool for colon cancer but does allow evaluation of the entire colon.
Colorectal cancer screening with double-contrast barium enema
: a national survey of diagnostic radiologists.