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 Menopause

摘要: Abstract Transvaginal ultrasonography (TVS) is considered useful for identifying endometrial malignancies, but it has a low specificity and high false-positive rate. The purpose of this study was to improve the technique. A total 300 postmenopausal women were studied. They clinically evaluated by TVS histology. Twenty yielded pathologic findings on examination. mean thickness related length time since menopause. For endometria with pathological findings, sonographic measurements greater than 3 mm exhibited 95.0% sensitivity, 68.5% specificity, 19.4% positive predictive value, 99.4% negative value. If 4-mm cutoff limit used