Journal of Ultrasound in Medicine, Vol 13, Issue 10 757-762, Copyright © 1994 by American Institute of Ultrasound in Medicine
Comparative study of transvaginal sonography and hysteroscopy for the detection of pathologic endometrial lesions in women with postmenopausal bleeding
B. Karlsson, S. Granberg, P. Hellberg and M. Wikland
Department of Obstetrics and Gynecology, Sahlgrenska Hospital, University of Goteborg, Sweden.
Dilatation and curettage is used as the "gold standard" for diagnosing
pathologic endometrial lesions in women with postmenopausal bleeding. In
this group of women, about 10% have an endometrial cancer and an additional
20% have some other endometrial abnormality. However, some abnormalities,
such as endometrial polyps and submucous fibroids, are difficult to
diagnose by dilatation and curettage. In such cases, combining transvaginal
sonography with hysteroscopy may be of value. This study compared the use
of transvaginal sonography and hysteroscopy for evaluation of the uterine
cavity in women with postmenopausal bleeding. The study included 51 women,
39 of whom had an abnormally thick ( > 4 mm) endometrium as measured by
transvaginal sonography, and 35 of 39 had an abnormal appearance at
hysteroscopy. The sensitivity and specificity for the measurement of
endometrial thickness using transvaginal sonography to diagnose an
endometrial abnormality were 100% and 75%, respectively. The corresponding
figures for hysteroscopy were 97% and 88%. In all women with an endometrial
thickness of 8 mm as measured by transvaginal sonography, hysteroscopy is
identified as an abnormality. The study indicates that transvaginal
sonography reveals an endometrial thickness of > or = 8 mm and the
histopathologic diagnosis after dilatation and curettage is atrophic
endometrial polyp or submucous myoma.