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Ultrasound Obstet Gynecol. 1995 Aug;6(2):108-15.

Endometrial assessment by transvaginal sonography and histological findings after D & C in women with postmenopausal bleeding.

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1
Department of Obstetrics and Gynecology, Burlo Institute, Trieste, Italy.

Abstract

A total of 149 women with postmenopausal bleeding underwent transvaginal sonography, hysteroscopy and dilatation and curettage in order to study the diagnostic accuracy of several ultrasound parameters in assessing endometrial pathology and to determine the most sensitive cut-off value of endometrial thickness for the exclusion of endometrial lesions. In distinguishing pathological from normal endometrium, transvaginal sonography showed a sensitivity of 69.3%, specificity of 82.7%, positive predictive value of 74.1% and negative predictive value of 72.1%. In detecting premalignant and malignant endometrial pathology, transvaginal sonography showed a sensitivity, specificity, positive predictive value and negative predictive value of 55%, 96.1%, 68.7% and 93.2%, respectively. Considering endometrial thickness as a single parameter, the most sensitive cut-off for defining normality was 4 mm; nevertheless, in the group of patients that had an endometrial thickness less than 4 mm, there was one case of malignancy (sensitivity, 95.2%; specificity, 49.4%; positive predictive value, 57.3%; and negative predictive value, 93.5%). Transvaginal sonography combined evaluation (morphology, thickness and color Doppler) showed a poor diagnostic accuracy in detecting endometrial pathology and in differentiating between endometrial benign lesions, endometrial polyps and adenocarcinoma in women with postmenopausal bleeding. Endometrial thickness evaluated with transvaginal sonography was preferable but not sensitive enough to exclude endometrial pathology.

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