Correlation between transvaginal ultrasound measured endometrial thickness and histopathological findings in black women with postmenopausal bleeding

ABSTRACT

OBJECTIVES: To determine whether a postmenopausal endometrial thickness of 5 mm excludes endometrial pathology in the black woman with postmenopausal bleeding. METHODS: Seventy-five black women with postmenopausal bleeding participated in this prospective study between August 1, 1998 and July 31, 1999. The patients had a questionnaire administered, which sought to obtain general information about their age, gynaecological, obstetric and social history. The patients then had a transvaginal ultrasound with double layer measurement of their endometrium; this was followed by hysteroscopy and suction curettage. The curettings were sent for histopathological analysis. The local hospital ethics comittee approved the study. RESULTS: Correlation between the endometrial thickness and endometrial pathology was not very reliable. Fifty per cent of the patients with endometrial cancer had an endometrial thickness of 3-4 mm. Seventy per cent of the women with endometrial thickness of greater than 5 mm had benign pathology. Additionally, the following characteristics were found to be more strongly associated with endometrial cancer age over 65 years (p = 0.015; relative risk (rr) 1.406), 5 or more years since menopause (p = 0.0176; rr = 1.295) and primary infertility (p = 0.0124; rr = 0.438). CONCLUSION: A double layer endometrial thickness of less than 5 mm, as measured by transvaginal ultrasound, does not exclude endometrial cancer as a cause of postemnopausal bleeding in the black female. A black, postmenopausal female with transvaginal ultrasound measured double layer endometrial thickness of 3 mm or greater and postmenopausal bleeding needs further investigation. Age, time since menopause, endometrial thickness and infertility are strongly associated with endometrial cancer in postmenopausal black women.(Au)