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The Boston Globe

Science

Cancer scans backed for older heavy smokers

After decades of qualms about lung cancer screening, the American Cancer Society says there now is enough evidence to recommend it, but only for current and former heavy smokers ages 55 to 74 and after a frank talk about risks and benefits.

The new guidelines, announced Friday, are a cautious but exciting step against the world’s most deadly cancer, doctors who wrote the advice say.

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