Postcolonoscopy colorectal cancer (PCCRC) is a dreaded event. Previous studies have found that PCCRC is associated with a lower adenoma detection rate (ADR), nongastroenterologist performance of colonoscopy, proximal location, and high-yield indications such as positive fecal blood tests. Some studies also suggest the serrated pathway contributes disproportionately to PCCRC. <\/p>\n\n\n\n
Most PCCRC has been attributed to missed lesions. The World Endoscopy Organization (WEO) created a PCCRC classification according to the root cause; this study applied the WEO system to a very large bank of PCCRCs in a large U.S. health care system.<\/p>\n\n\n\n
The authors randomly selected 523 of 1497 colonoscopies that had resulted in PCCRC diagnoses 6 months to 10 years after colonoscopy. Of the included cases, 197 (37%) were classified as \u201clikely new CRC,\u201d which the WEO system defines as PCCRC that has arisen more than 4 years after colonoscopy. Among these, 9 (4.6%) had an advanced adenoma detected at the prior colonoscopy in the same colon segment as the subsequently diagnosed PCCRC, 16 (8.1%) had an advanced adenoma in a different segment, and 13 (6.7%) had an incomplete colonoscopy or inadequate preparation.<\/p>\n\n\n\n
Among the 63% diagnosed within 4 years of colonoscopy, 236 (70.2%) had a complete examination with adequate preparation and were classified as \u201cpossible missed lesion, prior examination adequate,\u201d and 52 (15.5%) were \u201cpossible missed lesion, prior examination negative but inadequate.\u201d There were 11 cases (3.3%) with advanced adenomas in the same bowel segment and classified as \u201cdetected lesion, not resected\u201d and 37 (11.0%) with advanced adenomas in the same segment and classified as \u201clikely incomplete resection of previously identified lesion.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"
Postcolonoscopy colorectal cancer (PCCRC) is a dreaded event. Previous studies have found that PCCRC is associated with a lower adenoma detection rate (ADR), nongastroenterologist performance of colonoscopy, proximal location, and high-yield indications such as positive fecal blood tests. Some studies also suggest the serrated pathway contributes disproportionately to PCCRC. Most PCCRC has been attributed to … Read more<\/a><\/p>\n","protected":false},"template":"","categories":[1768,1769],"tags":[2058,2485,2484,3549,3548],"class_list":["post-13530","ec-news","type-ec-news","status-publish","hentry","category-asge-journal-scan","category-asge-kolon","tag-colon-2","tag-pccrc","tag-postcolonoscopy-colorectal-cancer","tag-weo","tag-world-endoscopy-organization"],"_links":{"self":[{"href":"https:\/\/www.endoscopy-campus.com\/en\/wp-json\/wp\/v2\/ec-news\/13530","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.endoscopy-campus.com\/en\/wp-json\/wp\/v2\/ec-news"}],"about":[{"href":"https:\/\/www.endoscopy-campus.com\/en\/wp-json\/wp\/v2\/types\/ec-news"}],"wp:attachment":[{"href":"https:\/\/www.endoscopy-campus.com\/en\/wp-json\/wp\/v2\/media?parent=13530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.endoscopy-campus.com\/en\/wp-json\/wp\/v2\/categories?post=13530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.endoscopy-campus.com\/en\/wp-json\/wp\/v2\/tags?post=13530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}