World
Prenatal blood test can sometimes hint at cancer in moms-to-be

Many moms-to-be opt for blood tests during pregnancy to check for fetal disorders such as Down syndrome. In rare instances, these tests can reveal something unexpected — hints of a hidden cancer in the woman.

In a study of 107 pregnant women whose test results were unusual, 52 were ultimately diagnosed with cancer. Most of them were treated and are now in remission, although seven with advanced cancers died.