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This Concept Map, created with IHMC CmapTools, has information related to: CRC Colonoscopy, Colonoscopy Direct View Colonoscopy SCOPE, Modality Direct Vision Flexible Sigmoidoscopy, Colonoscopy Asymptomatic Screening, FOBT (-) Repeat in 1 year, Gene Carrier/ At Risk HNPCC Colonoscopy q1-2yrs, FOBT Sensitivity 30-90%, Adenocarcinoma ???? ᢒ% CRC, Flexible Sigmoidoscopy if no findings (-) Repeat in 5yrs, Flexible Sigmoidoscopy indications Technically can't do full scope, in 20% of people Extent proximal disease 40% CRC prox splenic flex, Detect Early Cancers Remove Adenomas, Malignant Invasive? Yes, Screening High Risk Gene Carrier/ At Risk, CRC Normal CEA level ᡪ% pts w localized disease, Modality Lab FOBT, Family Hx 1st Degree 1 relative With CRC/adenomatous polyps ឬyrs, 60cm of distal colon Need to also perform both: CT of prox colon, Prevent Early Cancers Remove Adenomas, colonoscopy Symptomatic Surveillance, CT colonography (virtual - 3D) Limited still need bowel prep