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Annual Ovarian Cancer Screening Does More Harm Than Good

In a large multicenter study enrolling over 70,000 women, annual screening with transvaginal pelvic ultrasound and ca125 blood testing did not reduce deaths from ovarian cancer, and in fact led to an increase in complications due to screening.

Investigators in the NCI-sponsored Prostate, Lung and Ovarian Cancer (PLCO) Screening trial randomly assigned over 78,000 women age 55-64 years of age to either annual screening with transvaginal pelvic sonograms for 4 years plus CA125 testing for 6 years or usual care at 10 study sites across the US., and followed the groups for up to 13 years. Over that time period, ovarian cancer rates in the screened group were 5.7 per 10,000 person-years vs 4.7 per 10,000 persons-years in the usual care group, with 3.1 deaths vs 2.6 deaths per 10,000 person years, respectively. Over 3000 women had false positive screening results, a third of whom had surgery and 15% of those operated on had a complications from their surgery. Deaths from other causes did not differ between the groups.

The investigators concluded that annual screening for ovarian cancer does not reduce mortality, and in fact caused harms among women with fals positive abnormal results.

This is not the first study that failed to find efficacy for ultrasound and ca125 in reducing mortality from ovarian cancer, but Read more »

*This blog post was originally published at The Blog That Ate Manhattan*

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