Colorectal Cancer TestsYearly Fecal occultblood test
Colorectal Cancer TestsYearly Fecal occultblood testYearly Fecalimmunochemical test
Colorectal Cancer TestsYearly Fecal occultblood testYearly Fecalimmunochemical testStool DNA test (intervaluncertain)
Colorectal Cancer TestsFlexible CT ColonographySigmoidoscopy every (virtual colonoscopy)5 yrs OR every 5yrsColonoscopy every 10yrs ORDouble Bariumcontrast Enema every5 yrs OR
ColonoscopyA procedure tovisualize the lining ofthe colon and rectum.Used to detectinﬂamed tissueulcerations andabnormal growths.
ColonoscopeThin ﬂexible scopewhich is dial controlledand maneuverable withﬁberoptic video camera.It also blows air to inﬂatethe colon, irrigates withwater, suctions, insertsinstruments for removal,biopsies, cauterization ofpolyps skin tissue.
Stool DNA TestRationale behind:Detects blood in the stool – which is intermittent and non-speciﬁcColon cells are shed continuouslyPolyps and cancer cells contain abnormal DNAStool DNA tests look for abnormal DNA from cells that are passed in the stool*Drawbacks:Misses some adenomasStill in testing phaseCost ($300-400)Not covered by all insurance
CTColonography New Sources of Risk Colorectal cancer prevention largely focuses on finding polyps, but flatter, less visible lesions that are not polyps are also cancer risks.Limitations: PolypRequires full bowel prep (which most patients ﬁnd Elevated to be the most distressing element of lesion colonoscopy)Colonoscopy is required if abnormalities Flat detected, lesion sometimes necessitating a second bowel prep Depressed lesionSteep learning curve for radiologistsLimited availability to high quality exams in The New York Times: Illustrations by JAMA many parts of the countryMost insurers do not currently cover CTC as a screening modalityCan miss ﬂat, smaller lesions