Transvaginal sonography, sonohysterography, and hysteroscopy for investigation of focal intrauterine lesions in women with recurrent postmenopausal bleeding after dilatation & curettage

To determine the diagnostic accuracy of different diagnostic methods (blind dilatation & curettage (D&C), transvaginal ultrasonography (TVS), sonohysterography (SH), and hysteroscopy) compared with gold standard (hysteroscopic biopsy's histopathologic result) in diagnosis of focal intrauterine lesions of recurrent postmenopausal bleeding. 36 postmenopausal women with recurrent vaginal bleeding after a normal D&C results were enrolled into the study. TVS, SH, hysteroscopy were performed on all patients. Outcomes of blind D&C, TVS, SH, and hysteroscopy were compared with results of gold standard. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and likelihood ratios (LR) were calculated. Blind D&C sensitivity, specificity, PPV, and NPV were 47, 68, 57, 59%, respectively in comparison with gold standard. Blind D&C fails to diagnose 70% of all focal intracavitary lesions. TVS sensitivity, specificity, PPV, NPV were 63, 78, 89, 41%, respectively. SH yielded better results; with 93% sensitivity, 56% specificity, 86% PPV, and 71% NPV. Hysteroscopy sensitivity, specificity, PPV, and NPV were 100, 44, 84, 100%, respectively. In experienced hands, SH can be an initial evaluation method of uterine cavity for detecting focal lesions in women with recurrent postmenopausal bleeding.