Chen H1, Liu Y1, Lu Y1, Lin X1, Wu Q1, Sun J1, Li C1.
Lasers Med Sci. 2018 May 18. doi: 10.1007/s10103-018-2536-3. [Epub ahead of print]
We aimed to determine the utility of blue laser imaging (BLI) with magnifying endoscopy (BLI-ME) for the prediction and diagnosis of gastric intestinal metaplasia (GIM). Participants, aged between 40 and 75 years, undergoing gastroscopy from January to April 2017 were included in this study. The ability of BLI-ME and white light endoscopy (WLE) to detect GIM was assessed by comparing the endoscopic findings with the histological findings. The correlation between the grades of light blue crest (LBC) appearance and histology grade of GIM was calculated. We included 100 participants in this study. GIM was diagnosed in 27 participants; 20 participants were detected by both BLI and WLE, four by BLI only, and three exclusively by random biopsies. The values of sensitivity, specificity, positive predictive values, and negative predictive values for detecting GIM were 34.9, 38.9, 25.4, and 57.1%, respectively, for WLE and 88.9, 96.7, 94.1, and 93.3%, respectively, for BLI-ME. The diagnostic accuracy for GIM was 43% for WLE and 94.0% for BLI-ME. A good correlation between the grades of LBC and the grades of GIM on histology was observed (P < 0.01). BLI-ME achieved a good diagnostic efficiency for detection of GIM. LBC seen on BLI-ME is a typical indicator of GIM.
1 Department of Gastrointestinal Endoscopy, Guangdong Provincial Key Laboratory ofColorectal and Pelvic Floor Diseases, the Sixtli Affiliated Hospital, Sun Yat-sen University, No.26 Yuancun Er Heng Rd, Tianhe Dishict, Guangzhou 510655, Guangdong Province, People’s Republic of China