G-EYE colonoscopy is superior to standard colonoscopy for increasing adenoma detection rate: an international randomized controlled trial (with videos).Shirin H, Shpak B, Epshtein J, Karstensen JG, Hoffman A, de Ridder R, Testoni PA, Ishaq S, Acquisition Of Data, Reddy DN, Gross SA, Neumann H, Goetz M, Abramowich D, Moshkowitz M, Mizrahi M, Vilmann P, Rey JW, Sanduleanu-Dascalescu S, Viale E, Chaudhari H, Pochapin MB, Yair M, Shnell M, Yaari S, Hendel JW, Teubner D, et al. Gastrointest Endosc.

BACKGROUND:Colorectal cancer (CRC) is largely preventable with routine screening and surveillance colonoscopy; however, interval cancers arising from precancerous lesions missed by standard colonoscopy (SC) still occur. Increased adenoma detection rate (ADR) has been found to be inversely associated with interval cancers.

The G-EYE device comprises a reusable balloon integrated at the distal tip of a standard colonoscope, which flattens haustral folds, centralizes the colonoscope's optics and reduces bowel slippage. The insufflated balloon also aims to enhance visualization of the colon during withdrawal, thereby increasing ADR.METHODS:In this randomized, controlled, international, multicenter study (11 centers), subjects (age ≥50) referred to colonoscopy for screening, surveillance, or due to changes in bowel habits, were randomized to undergo either balloon-assisted colonoscopy using an insufflated balloon during withdrawal or standard high-definition colonoscopy. Primary endpoint was ADR.RESULTS:One thousand subjects were enrolled between May 2014 and September 2016 to undergo colonoscopy by experienced endoscopists; 803 were finally analyzed (SC: n=396; balloon-assisted colonoscopy: n=407). Baseline parameters were similar in both groups. Balloon-assisted colonoscopy provided a 48.0% ADR compared with 37.5% in the SC group (28% increase, p=0.0027). Additionally, balloon-assisted colonoscopy provided for a significant increase in detection of advanced (p=0.0033), flat adenomas (p<0.0001), and sessile serrated adenoma/polyp (SSA/Ps) (p=0.0026).CONCLUSIONS:Balloon-assisted colonoscopy yielded a higher ADR and increased the detection of advanced, flat and SSA/Ps when compared with SC. Improved detection by the G-EYE device could impact the quality of CRC screening by reducing miss rates, and consequently reducing of interval cancers incidence Leggi l'articolo



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