Lung Cancer May Lie Dormant for 2 Decades

October 9, 2014 6:31 PM

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THURSDAY, Oct. 9, 2014 (HealthDay News) -- Lung cancer can remain dormant for more than 20 years before suddenly becoming aggressive, a new study says.

Researchers analyzed lung cancers from seven patients -- including smokers, former smokers and never smokers -- and found that the initial genetic errors that cause the cancer can go undetected for many years.

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