Prevalence of and risk factors for endometrial polyps among asymptomatic postmenopausal women with uterovaginal prolapse.

Background: The prevalence of endometrial polyps among asymptomatic, postmenopausal women is not well defined. There is no clear clinical consensus on how to manage endometrial polyps in this population and whether these polyps truly are a cause for clinical concern.

Objective: This study aimed to estimate the prevalence of endometrial polyps among asymptomatic (without bleeding), postmenopausal women and to evaluate risk factors associated with their presence.

Study design: This cross-sectional study assessed the prevalence of endometrial polyps among asymptomatic, postmenopausal women who underwent a hysterectomy for uterovaginal prolapse. Patients were excluded if they underwent a hysterectomy for other indications, including postmenopausal bleeding. Following chart review, eligible patients who received care at a single site in Washington state from 2009 to 2018 were included. The primary outcome was the presence of endometrial polyps on pathology. Risk factors associated with polyp prevalence were subsequently assessed using univariate analysis and multivariate regression.

Results: Of the 317 eligible women identified, endometrial polyps were identified in 106 women (33.4%). The average polyp size and endometrial thickness was 13±10 mm and 1.4±1.5 mm, respectively. Most cases (78%) had solitary polyps. Premalignant and malignant lesions were found in 2 cases (1.89%); 1 had endometrial carcinoma and 1 had endometrial intraepithelial neoplasia. Baseline clinical and demographic characteristics were similar between patients with and those without endometrial polyps, including the presence of fibroids, endometriosis, and adenomyosis. A multivariate logistic regression showed that the presence of polyps was independently associated with a high body mass index (odds ratio, 1.06; 95% confidence interval, 1.01-1.12; P=.02) and use of menopausal hormone therapy (odds ratio, 1.67; 95% confidence interval, 1.02-2.72; P=.04).

Conclusion: Asymptomatic postmenopausal women who underwent hysterectomy for uterovaginal prolapse exhibited a high prevalence of endometrial polyps. Those who used menopausal hormone therapy and who had a high body mass index were at a higher risk for developing endometrial polyps. Although the risk for malignancy seems to be low, more investigation is warranted to truly quantify the lifetime risk. For now, expectant management may be a reasonable approach for incidentally found, asymptomatic polyps.