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Cervical Cancer Health Center

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Endometrial Cancer Screening (PDQ®): Screening - Health Professional Information [NCI] - Evidence of Benefit

Measuring endometrial thickness (ET) with transvaginal ultrasound (TVU) and endometrial sampling with cytological examination have been proposed as possible screening modalities for endometrial cancer. The Papanicolaou (Pap) test, used successfully for screening for cervical cancer, is too insensitive to be used as a screening technique for the detection of endometrial cancer,[1] although occasionally the Pap test may fortuitously identify endometrial abnormalities, such as endometrial cancer.

Routine screening of asymptomatic women for endometrial cancer has not been evaluated for its impact on endometrial cancer mortality.[2,3] Although high-risk groups can be identified, the benefit of screening in reducing endometrial cancer mortality in these high-risk groups has not been evaluated. Using the same cutoffs to define an abnormal ET in asymptomatic women [4] as used in symptomatic women [5] would result in large numbers of false-positive test results and larger numbers of unnecessary referrals for cytological evaluations. Published recommendations for screening certain groups of women at high risk for endometrial carcinoma are based on opinion regarding presumptive benefit.[6]

Recommended Related to Cervical Cancer

General Information About Cervical Cancer

Cervical cancer is the fourth most common cancer in women worldwide, and it has the fourth highest mortality rate among cancers in women.[1] Most cases of cervical cancer are preventable by routine screening and by treatment of precancerous lesions. As a result, most of the cervical cancer cases are diagnosed in women who live in regions with inadequate screening protocols. Incidence and Mortality Estimated new cases and deaths from cervical (uterine cervix) cancer in the United States...

Read the General Information About Cervical Cancer article > >

Modalities of Endometrial Cancer Screening

Ultrasonography in women with vaginal bleeding

TVU is used as a diagnostic tool to evaluate symptomatic women with vaginal bleeding. Among women with postmenopausal uterine bleeding and cancer, 96% will have an abnormal ET (>6 mm). The specificity varies by whether women used hormone therapy. Among nonusers, the specificity was 92%.[5] Much less work has been done to evaluate the accuracy of TVU among asymptomatic women. If the same endometrial thickness cutoff is used among asymptomatic women, the false positives will be extremely high, resulting in a very low positive predictive value.[4] No studies have evaluated the efficacy of screening with TVU in reducing mortality from endometrial cancer.

A group of researchers used dilation and curettage (D&C) as a gold standard, to evaluate TVU measurement of ET as a predictor of endometrial cancer in women reporting postmenopausal bleeding (estrogen-progestin therapy [hormone therapy] and nonhormone therapy users). Of the 339 participants, 39 (11.5%) were diagnosed with endometrial cancer (four had an ET of 5-7 mm and 35 had an ET > 8 mm) based on histopathology from curettage. No cancers were detected in women with an ET of less than 4 mm. Using a cutoff point of 4 mm, TVU has 100% sensitivity and 60% specificity.[7] In this population, 46% (156) of the women had an ET greater than 4 mm.

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