Objective: To evaluate the interest of systematic endometrial biopsy at the time of vaginal reconstructive surgery with uterine preservation., Methods: We performed a retrospective monocentric study on all women who had vaginal reconstructive surgery with uterine preservation from 2005 to 2012. All following parameters have been studied: baseline characteristics (age, parity, BMI, hormonal status, medical history), prolapse stage using the POP-Q, preoperative pelvic ultrasound (endometrial thickness), and type of surgery. Women with previous hysterectomy were excluded., Results: Four hundred and fourteen patients were operated during this period, and 268 have uterine preservation (64.7%). Baseline characteristics were mean age 64.7±10.7 (39 to 92), mean parity 2.6±1.5, mean BMI 25.5±4.2, menopause 238 (88.8%), HRT 32 (12%), previous breast cancer 16 (6%), diabetes mellitus 31 (11.6%), and hypertension 87 (32.5%). Prolapse were at stage II in 127 (47.3%), stage III in 99 (36.9%) and stage IV in 17 (6.3%). Preoperative pelvic ultrasound has been done in 255 patients (95.2%), and mean endometrial thickness was 5.1mm (range 1.6-16). Overall, 152 intra-operative endometrial biopsies were assessable (56.7%). In 24 cases (15.8%), samples were too small to be interpretable. Finally, the 128 interpretable biopsies (82.2%) have shown one carcinoma (0.8%), four hyperplasia (3.2%), two endometrial polyps (1.6%), and 121 normal endometria (94.5%). The only cancer was discovered on a 77 year old patient, with a history of previous breast cancer, and with a preoperative endometrial thickness of 7 mm. No patient with normal preoperative ultrasound endometrial screening had abnormal endometrial biopsy., Conclusion: Vaginal reconstructive surgery with uterine preservation implicates a preoperative endometrial evaluation by ultrasound. Intra-operative endometrial biopsy does not seem to be justified., (Copyright © 2013 Elsevier Masson SAS. All rights reserved.)