Predictive factors for colorectal polyps’ detection

Aims Colorectal cancer (CRC) has high incidence and mortality. Early diagnosis could increase patient survival. Therefore, the colorectal polyps' detection is essential to reduce the incidence of CRC. The aim of this study was to assess the polyps detection rate (PDR) and the risk factors for colorectal polyps.

Methods We conducted a retrospective monocentric study that collected data from all patients who underwent colonoscopy over a five-year period in a digestive endoscopy unit. Demographic, clinical, and endoscopic data were collected.

Results During the study period, a total of 2,458 colonoscopies were analyzed. The average age of patients was 57 years (range 13-97). The male-to-female ratio was 1.07. The polyp detection rate was 28.7% (N=706). The average age of these patients with detected polyps was 63 years (range 26-97), with a male predominance (56%). Eleven patients (1.6%) had a family history of CRC, and 41 patients had a personal history of CRC. Polyps were sessile (Paris Is) in 617 patients (89.2%), pedunculated in 96 patients (17.1%), and flat in 17.1% of cases. Polyps larger than 10 mm were found in 128 patients. In univariate analysis, the predictive factors for colorectal polyps were: age over 45 years (p<0.001), colonic diverticulosis (p<0.001), endoscopy performed under anesthesia (p<0.001), good bowel preparation (Boston score>7) (p=0.023), and history of polypectomy (p<0.001). In multivariate analysis, age over 45 years (p<0.001), colonic diverticulosis (p<0.001), endoscopy performed under general anesthesia (p<0.001), and history of polypectomy (p<0.001) were independent factors associated with the presence of colorectal polyps.

Conclusions In our study, the PDR increases with age, history of polyps, colonic diverticulosis, and examination under anesthesia.

Publication History

Article published online:
27 March 2025