Additional value of Doppler ultrasound to B-mode ultrasound in assessing for uterine intracavitary pathologies among perimenopausal and postmenopausal bleeding women: a multicentre prospective observational study in Vietnam.

Objective: To determine the role of Doppler ultrasonography when combined with B-mode ultrasonography in diagnosing uterine intracavitary pathologies (UIPs) in perimenopausal and postmenopausal bleeding women.

Methods: This multicentre prospective observational study included 150 women aged > 40 years with abnormal uterine bleeding (AUB), who were hospitalised at Hospital X and Hospital Y between June 2016 and June 2019. All participants underwent transvaginal B-mode ultrasound and transvaginal Doppler ultrasound, and the results of sonography were compared to histopathological endpoint.

Results: The morphological features, structure, margin, border line of the endometrial-mass lesion, intracavitary uterine fluid, and Doppler signal clearly differed between benign and malignant intracavitary pathologies (p < 0.0001). However, echogenicity had a limited value in differentiating among UIPs (p = 0.1). The sensitivity and specificity of the pedicle sign in diagnosing endometrial polyps were 50.0% and 97.6%; for the circular pattern in endometrial fibroids were 46.2% and 100.0%; for the multiple vessel pattern in endometrial cancer were 64.0% and 96.0%; and for the scattered vessel pattern in endometrial hyperplasia were 43.96% and 56.43%, respectively. The additional value of Doppler ultrasound was greater than that of separate B-mode ultrasound in assessing UIPs in our study.

Conclusions: B-mode ultrasound used in combination with Doppler as a noninvasive tool was significantly valuable in the diagnostic procedures for UIPs in perimenopausal and postmenopausal bleeding women. Doppler ultrasound and B-mode transvaginal ultrasound should be used together routinely for discrimination between malignant diseases and benign endometrial changes. Further studies are needed to better understand the benefits of combining Doppler ultrasound and B-mode ultrasound in routine sonographic practice.