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CC May 2017 Colon Polyps Follow-up and Screening

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echoecho's version from 2017-05-14 23:11

Section

Question Answer
What cancer is the third most common cancer in the US?colon cancer
Is colon cancer screening in asymptomatic, average-risk individuals recommended by several major organizations, including the United States Preventive Services Task Force (USPSTF)?yes
*** The USPSTF recommends screening beginning at age ____ and continuing until age ____?50; 75
What two types of screening with colonoscopy are there?1) diagnostic. 2) therapeutic
Define polyps?protrusions into the lumen of the colon
Two types of polyps?neoplastic and nonneoplastic
What type of polyps are the most common type of nonneoplastic polyps found on screening colonoscopy?hyper plastic polyps
Up to 50% of polyps seen in the rectum and sigmoid colon are small, sessile polyps < ____ mm in size?5
*** Is there an increased risk of cancer in patients with small, distal hyper plastic polyps?no
Define adenomas?polyps with the potential for neoplastic transformation
Adenomas are subdivided according to what two characteristics?1) glandular histology 2) level of dysphasia
Recommendations for surveillance vary with the _______ potential for the different types of adenomas?malignant
*** What type of adenomas are the most common type (roughly 80%)? These have a ___% chance of developing into colon cancer?1) tubular adenomas 2) 5%
*** What type of adenomas have an almost 20% chance of developing into a malignancy?20%
*** What type of adenomas have an almost 40% chance of developing into a malignancy?40%
List the three conditions which increase a patient's risk of developing colon cancer?1) presence of polyps > 1 cm in size 2) high-grade dysplasia 3) multiple adenomas
What type of colon polyps are thought to be responsible for 20% and 30% of colorectal cancers?sessile serrated polyps
A higher risk of cancer is associated with sessile serrated polyps that are > ___cm in size, a more ____ (proximal vs distal) location and the presence of ______?1) 1 cm 2) proximal 3)dysplasia
What is the recommended colonoscopy follow up for normal (no polyps or normal biopsy results)?10 years
What is the recommended colonoscopy follow up for hyperplastic polyps (<10 mm in rectum or sigmoid)?10 years
What is the recommended colonoscopy follow up for low-risk polyps (1-2 tubular adenomas (<10 mm); 1 sessile serrated polyp without dysplasia (<10 mm)?5-10 years (tubular); 5 years (sessile serrated)
What is the recommended colonoscopy follow up for high-risk polyps (3-10 tubular adenomas; tubular adenoma or serrated polyp > 10 mm; billows adenoma; high grade dysplasia present; sessile serrated polyp with dysplasia; serrated adenoma)?3 years
What is the recommended colonoscopy follow up for > 10 adenomas?< 3 years
What is the recommended colonoscopy follow up for serrated polyposis syndrome?1 year
What is the recommended colonoscopy follow up following piecemeal removal of 15 mm sessile adenoma or serrated polyp?< 1 year
What is the recommended colonoscopy follow up following curative resection for colorectal cancer?1 year after resection, then 3 and 5 years if normal
*** SUMMARY = Screening intervals after discovery of colon polyps depends on _____ type?polyp
*** SUMMARY = _________ polyps are the most common type of nonneoplastic polyps?hyperplastic
*** SUMMARY = _________ polyps have the highest potential for neoplastic change; surveillance intervals vary based on the degree of risk for __________ transformation?1) adenomatous. 2) malignant
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