Magnitude of overdiagnosis in cancer indicates need for strategies to address the problem

Many cancers detected by screening tests are not destined to cause symptoms or death and therefore represent a phenomenon known as overdiagnosis. And because overdiagnosis leads to unnecessary treatment and other harms, it is important to develop clinical and research strategies to quantify, recognize, and manage it, according to a review published online April 22 in the Journal of the National Cancer Institute.

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