A new blood test can detect more than 50 types of cancer, as well as where in the body they originated — even before symptoms develop.
Researchers in the United States and United Kingdom developed the new test, and they now report their findings in the journal Annals of Oncology.
There is an urgent need for better diagnostic tools for cancer. All too often, healthcare professionals can only make a diagnosis after symptoms have developed — at which point it may be too late for curative treatment.
Screening programs, such as mammograms for breast cancer and Pap smears for cervical cancer, intend to overcome this problem by detecting cancer at an earlier stage.
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