Abstract 4003: Colon sessile serrated polyps associate with endometrial polyps

Background: Colon and endometrial polyps are current health issues and their incidences are on the rise. Due to conflicting reports of higher colon polyps in patients with endometrial polyps, we aimed to evaluate if there is such an association in African Americans, a population at high risk for colorectal cancer. Method: We retrospectively reviewed all female patients who had endometrial (EN) presentations (n=3,600) and colonoscopy (n=14,888) at Howard University Hospital from January 2004 to December 2015. We selected cases with endometrial poly and control without this diagnosis who underwent colonoscopy. Clinical [Body Mass Index (BMI), diabetes (DM), hypertension (HTN), Tamoxifen intake, age] and pathological (histology, location, type of lesions) features of Cases and Controls were collected. Association between EN and colon polyp was tested using multivariable logistic regression analysis. We excluded the patients with endometrial cancer. Results: We recruited 664 cases and 118 controls. Cases were statistically significant older (median age of 60 vs. 57 in controls) and had higher rates of smoking and DM than controls. However, the overall colon polyp prevalence in the two groups was not statistically different (54% vs 52% in controls and cases, respectively). In subgroups of subject with colon polyp, sigmoid and rectal polyps were more prevalent in controls than cases. Sessile serrated polyps/adenomas (SSPs) were more frequent in cases (8% vs. 2%, p=0.03) while benign mucosa was more so in controls. Whether considering the overall study population or just those with colon polyps, SSPs lesions associated with an Odds Ratio of 4.6 (p=0.02) for EN polyp occurrence, after adjusting for confounder. Conclusion: Our study shows that the overall colon polyp’s prevalence was similar in endometrial polyp patients compared to endometrial-polyp free controls. However, a significant association between SSP with endometrial polyps was noted. Females with colon lesions of the SSP type might benefit from a screening for endometrial polyp in an age-independent manner. Note: This abstract was not presented at the meeting. Citation Format: Hassan Brim, Taraneh Tarjoman, Shirin Ganjali, Saman Azam, Negin Farsi, Edward Lee, Babak Shokrani, Farshad Aduli, Carla Williams, Adeyinka Laiyemo, Akbar Soleimani, Zaki Sherif, Mehdi syed Nouraie, Hassan Ashktorab. Colon sessile serrated polyps associate with endometrial polyps [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 4003.