characteristics of diminutive colorectal polyps in patients undergoing colonoscopy in an educational, therapeutic hospital in western iran

Background and aims: limited information is available on the frequency of advanced adenomas in diminutive colon polyps. thus, this study aimed to investigate the pathological characteristics and the frequency of high-grade dysplasia in diminutive colorectal polyps in individuals referred to colonoscopy examination in kermanshah, iran. materials and methods: demographics characteristics, location and diameter of the polyp, histological assessment of the polyps, grade, and others were retrieved from colonoscopy reports. results and conclusions: during the study period, 250 diminutive colorectal polyps were detected. the histological assessment showed that 36.4% were adenomatous, 32.8% were hyperplastic, and 30.8% were inflammatory polyps. only two diminutive polyps (0.8%) had high-grade dysplasia, and the frequency of adenocarcinoma in our study was 0.4%. besides, the frequency of adenomatous polyps was higher in the proximal versus the distal colon. these findings emphasize the urgent need for a colorectal cancer screening plan in the iranian population to improve therapeutic outcomes.