Measurement precision and normal range of endometrial thickness in a postmenopausal population by transvaginal ultrasound
- 1 November 2002
- journal article
- Published by Wiley in Ultrasound in Obstetrics & Gynecology
- Vol. 20 (5), 492-495
- https://doi.org/10.1046/j.1469-0705.2002.00828.x
Abstract
The aim of this study was to examine the endometrial thickness (ET) in an asymptomatic postmenopausal population, and to assess the long-term variability.A total of 1182 asymptomatic generally healthy postmenopausal women were enrolled into this cross-sectional evaluation of the ET. Measurements were performed by transvaginal ultrasound. A subset of the women (n = 178) was examined twice 3 months to 2 years apart to assess the long-term variability.Cross-sectionally, ET varied with length of menopause. During the first 5 years after menopause (YSM) the mean ET was 2.3 mm but it decreased by 0.03 mm/year (P < 0.01). From 5 to 13 YSM the ET remained stable at a mean of 1.8 mm with no significant changes (P = 0.13). Thereafter there was a minimal increase of 0.01 mm/year (P < 0.05). In order to minimize the influence of natural changes on ET, only women who had reached the menopause more than 5 years earlier were entered into the subsequent long-term study. The mean ET was 2.0 mm +/- 1.0 mm with no significant differences within or between the observers' measurements. The precision errors were less than 1 mm.The normal range of the thickness of the postmenopausal endometrium in asymptomatic women varies with YSM. There is a high long-term agreement within and between observers in measuring the ET.Keywords
This publication has 20 references indexed in Scilit:
- Errors in the measurement of endometrial depth using transvaginal sonography in postmenopausal women on tamoxifen: random error is reduced using saline instillation sonographyUltrasound in Obstetrics & Gynecology, 2000
- Screening for endometrial cancer in asymptomatic postmenopausal women with conventional and colour Doppler sonographyBJOG: An International Journal of Obstetrics and Gynaecology, 1999
- Improvement of Diagnostic Accuracy of Transvaginal Ultrasound for Identification of Endometrial Malignancies by Using Cutoff Level of Endometrial Thickness Based on Length of Time Since MenopauseGynecologic Oncology, 1997
- The reproductibility of the results of transvaginal sonography of the uterus in patients with abnormal uterine bleedingUltrasound in Obstetrics & Gynecology, 1996
- Thickened Endometrial Stripe and/or Endometrial Fluid as a Marker of Pathology: Fact or Fancy?Gynecologic Oncology, 1996
- Sonographic endometrial thickness: a useful test to predict atrophy in patients with postmenopausal bleeding. An Italian multicenter studyUltrasound in Obstetrics & Gynecology, 1996
- Transvaginal ultrasonography of the endometrium in women with postmenopausal bleeding — a Nordic multicenter studyAmerican Journal of Obstetrics and Gynecology, 1995
- Endovaginal Scanning of the Endometrium Compared to Cytology and Histology in Women with Postmenopausal BleedingGynecologic Oncology, 1993
- Endometrial hyperplasia: Value of endometrial thickness in ultrasonographic diagnosis and clinical significanceJournal of Clinical Ultrasound, 1990
- Correlation of ultrasound findings and endometrial histopathology in postmenopausal womenBJOG: An International Journal of Obstetrics and Gynaecology, 1989