Characteristics of Diminutive Colorectal Polyps in Patients Undergoing Colonoscopy in an Educational, Therapeutic Hospital in Western Iran

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.

Demographics characteristics, location and diameter of the polyp, histological assessment of the polyps, grade, and others were retrieved from colonoscopy reports.

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.