Retroflex of anal canal








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Prospective Comparison Of Anoscopy And

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Anal dysplasia detection during routine screening colonoscopy

Author information Article notes Copyright and License information Disclaimer. In patients with a larger rectum, the posterior rectal wall may not be visible continuously when the instrument is looking forward from the anal verge. Thus, perhaps the value of routine retroflexion could be greater than we encountered when performed in different populations or if a different technique from the one that we used was employed to perform the forward examination that precedes retroflexion. This was a prospective observational study performed in an academic endoscopy unit. Since retroflexion has a low but real risk, the results suggest that retroflexion is not routinely required to achieve a highly effective colonoscopy. Thirty-three were visible in both the forward and retroflexed view 25 hyperplastic, 8 adenomatous. For unclear reasons, we did not encounter this prevalence of advanced pathology in the distal rectum either with forward or retroflexed views. As part of our continuous quality improvement program, one of us Douglas Kevin Rex prospectively recorded the findings of retroflexion during colonoscopy from June 20, to August 15, Retroflexion was successful in The outcome measurement was the yield of neoplasia in the distal rectum detected by forward viewing vs retroflexion. Varadarajulu S, Ramsey WH. Endoscopists with less effective forward viewing technique could logically expect a higher yield from retroflexion. Given that the literature on the value of rectal retroflexion during routine procedures is mixed[ 2 - 5 ], we prospectively assessed the detection of neoplasia during rectal retroflexion in consecutive patients. Retroflexion is a commonly performed maneuver during colonoscopy[ 1 ], and has been strongly endorsed as an essential component of colonoscopy by experts, and specifically for the purpose of detecting neoplasia[ 1 ].

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Description: Retroflexion is a commonly performed maneuver during colonoscopy[ 1 ], and has been strongly endorsed as an essential component of colonoscopy by experts, and specifically for the purpose of detecting neoplasia[ 1 ]. Given that the literature on the value of rectal retroflexion during routine procedures is mixed[ 2 - 5 ], we prospectively assessed the detection of neoplasia during rectal retroflexion in consecutive patients. Whether polyps in the distal rectum were visible on forward or retroflexed views or both was prospectively recorded. From an imaging perspective, the goal in exposing colorectal mucosa during colonoscopy is to expose and examine all of it. Limitations of the current study include the relatively low yield of neoplasia in the distal rectum. Rectal retroflexion refers to a maneuver during colonoscopy in which the instrument tip is deflected in U-turn so that the imaging system is directed backward, allowing clear visualization of the distal rectum. Endoscopists with less effective forward viewing technique could logically expect a higher yield from retroflexion. Utility of retroflexion in lower gastrointestinal endoscopy. Grobe et al[ 2 ] deemed retroflexion valuable in 75 patients, but did not document a single adenoma detected only by retroflexion. Retroflexion can be a useful therapeutic maneuver in the colon or rectum for polypectomy[ 10 , 11 ] and in the rectum for treatment of hemorrhoids[ 12 , 13 ].
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