But, the large size (≥10 mm) of the polyp (odds ratio 35.1, 95% CI 7.91–155.6), presence of white spots (odds ratio 8.5, 95% CI 2.8–26.0) were associated with malignant risk. Even if we combined the pit pattern with the status of whitish spot, there were not check details increased accuracy to differenciate non-neoplastic from neoplastic polyp. Conclusion: Whitish-spotted neoplastic

polyp is more likely malignant. Detecting whitish-spotted mucosa may lead to detecting neoplastic polyp nearby, by making the boundary of polyp wider and this can decrease the missing rate of it. Key Word(s): 1. Whitish spot; 2. Neoplastic polyp; Presenting Author: YU MI LEE Additional Authors: KYUNG HO SONG, HOON SUP KOO, YONG SEOK KIM, TAE HEE LEE, KYU CHAN HUH, YOUNG WOO CHOI, YOUNG WOO KANG Corresponding Author: KYUNG HO SONG Affiliations: Department of Internal Medicine, Konyang University College of Medicine Objective: The diagnosis of gastric intestinal metaplasia is currently possible with the histological assessment through multiple endoscopic biopsies, chromoendoscopy with methylene blue or magnifying

endoscopy. But there is a lack of pactical and easily available method. The acetic acid (vinegar) chromoendoscopy has not been evaluated for this purpose. Therefore, we wanted to assess the diagnostic accuracy selleck screening library of acetic acid chromoendoscopy for judging the extent of gastric intestinal 上海皓元 metaplasia. Methods: Consecutive 126 patients were enrolled. The participants underwent screening EGD with 1.5% acetic acid for detection of acetowhitic reactions. And targeting biopsies were performed subsequently at the five standardized intra-gastric locations according to the updated Sydney System. The accuracy of acetic acid chromoendoscopy was evaluated with biopsy report as the reference. Two endoscopists judged the presence or absence of acetowhitic reactions, blinded to the

other physician’s result. Results: There was substantial inter-observer agreement between the two endoscopists (k index = 0.808, P < 0.01). The diagnostic accuracy of acetic acid chromoendoscopy was 86.5% and 86.3%, respectively by two endoscopists. The overall sensitivity, specificity, positive predictive value and negative predictive values were 74.6%, 91.7%, 79.9% and 89.1%, respectively. The specificity of gastric body was over 92%. Conclusion: There was substantial inter-observer agreement between the two endoscopists (k index = 0.808, P < 0.01). The diagnostic accuracy of acetic acid chromoendoscopy was 86.5% and 86.3%, respectively by two endoscopists. The overall sensitivity, specificity, positive predictive value and negative predictive values were 74.6%, 91.7%, 79.9% and 89.1%, respectively. The specificity of gastric body was over 92%. Key Word(s): 1. chromoendoscopy; 2.