Experts Call for Redefinition of 'Cancer'

Many growths are slow to progress and nonlethal, only leading to unnecessary treatment, panel says

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"Which cases of DCIS will turn into an aggressive cancer and which ones won't?" he told the Times. "I wish we knew that. We don't have very accurate ways of looking at tissue and looking at tumors under the microscope and knowing with great certainty that it is a slow-growing cancer."

More information

There's more on cancer detection and diagnosis at the U.S. National Cancer Institute.

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