Distribution of colorectal polyps according to Paris and Vienna classification systems: a prospective cohort single center study

A SINGLE CENTER STUDY

Abstract

Background: Colorectal polyps are a frequent finding in colonoscopy. They comprise the precursor of colorectal cancer through the adenoma-carcinoma sequence. Early detection and removal of pre-neoplastic adenomatous colorectal polyps during screening colonoscopy decreases the incidence of colorectal cancer and its related mortality. This study aimed at reporting the distribution of colorectal polyps according to demographic, anatomic and clinical data and classifying them according to Paris and Vienna classifications in a group of patients at Medical Research Institute, Alexandria University, Egypt between November 2019 and August 2020. Methods and Patients: Prospectively, the study was performed on 28 patients referred for colonoscopy with 38 colorectal polyps which were classified using Paris classification, resected endoscopically, evaluated histopathologically then classified according to Vienna classification. Results: The study showed that male gender had higher incidence of colorectal polyps (67.9%). This incidence increased with advancing age (mean age was 55.14 ± 10.36 years). Bleeding per rectum represented the most common presenting symptom (35.7%). The most common colon segment affected was sigmoid colon (50%) followed by rectum (26.3%). The mean size of polyps was 11.8 ± 5.6 mm. According to Paris classification, 50% of polyps were classified as class 0-Ip and 50% were classified as class 0-Is. Regarding Vienna classification, 50% of polyps was classified as group 4.1, 34.2% of polyps was classified as group 1 while 15.8% of polyps were classified as group 3. Conclusion: This study evaluated the colorectal polyps findings among colonoscopy patients. Early and prompt diagnosis with adequate polypectomy of pre-neoplastic colorectal polyps can decrease incidence of colorectal cancer and related morbidity and mortality.