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Transvaginal ultrasound is increasingly used to measure endometrial thickness, especially in women with menopausal bleeding. Thickness >5 mm prompts testing for endometrial hyperplasia, usually with a biopsy, whereas further testing is often considered unnecessary for thinner endometria. To determine the reliability of transvaginal ultrasound for measuring endometrial thickness, researchers compared pre-hysterectomy ultrasound with histologic assessment of post-hysterectomy specimens.
Their prospective study involved 40 women (32 premenopausal, 8 postmenopausal) undergoing hysterectomy for dysfunctional uterine bleeding, prolapse, or cervical intraepithelial neoplasia; women using hormone therapy were excluded. Within 16 hours before hystere…