Comparison of newly found polyps after removal of small colorectal polyps with cold or hot snare polypectomy

Background and study aims : There are limited data regarding polyp recurrence following cold or hot snare polypectomy for small colorectal polyps. The aim of this study was to evaluate the preva- lence of newly found polyp after cold or hot snare polypectomy and the predictive factors. Patients and methods : This was a retrospective case-control study at a single municipal hospital. Patients undergoing cold or hot snare polypectomy for colorectal polyps = 8 mm included in a previous study (Digestion 2011; 84:78) were enrolled. Newly found polyps were defined as polyps detected at follow-up colono- scopy within 3 years. Predictive factors for new polyps were as- sessed by multivariate analysis using logistic regression. Results : A total of 72 patients (female 22, mean age 68) with 184 polyps were enrolled. Eighty-nine polyps (mean size ± SD, 5.3 ± 2 mm) were resected with cold snare while 95 polyps (mean size 5.5±6mm) were resected with hot snare polypectomy. Twenty-four new polyps (< 5 mm) were found at follow-up. No polypectomy scars were detected in the vicinity of the new polyps. The prevalence of new polyps was similar (i.e., cold vs. hot snare polypectomy ; 23% vs. 19%, P = 0.68). Multivariate analysis re- vealed that the removal of = 4 polyps was an independent predictor associated with new polyps (odds ratio : 7.8, 95% confidence inter- val : 2.1-32, P = 0.0022). Conclusions : Diminutive polyps were newly found with similar prevalence after cold or hot snare polypectomy, but there were no recurrent polyps detected. (Acta gastroenterol. belg., 2015, 78, 406- 410).