Lung cancer is an abnormal growth of cells in the lungs.
These abnormal cells form tumors that damage the normal functioning of the lungs.
Without treatment, non-small cell lung cancer can spread throughout the body, causing damage to other organ systems.

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Sometimes non-small cell lung cancer does not produce any noticeable signs and symptoms.
The main differences between the two are the size of the cancer cells when examined under a microscope.
As the names suggest, small cell lung cancer results from smaller cancer cells than non-small cell lung cancer.
What Causes Non-Small Cell Lung Cancer?
How Is Non-Small Cell Lung Cancer Diagnosed?
Non-small cell lung cancer is diagnosed through testing that examines the structure and function of your lungs.
The stage of non-small cell lung cancer will influence what pop in of treatment is most appropriate.
Radiation therapy is often used together with chemotherapy to treat cancer.
Chemotherapy
Chemotherapyinvolves the use of powerful medications that kill rapidly growing cancer cells.
Zappa C, Mousa SA.Non-small cell lung cancer: current treatment and future advances.Transl Lung Cancer Res.
2016;5(3):288-300. doi:10.21037/tlcr.2016.06.07
American Lung Association.Why should you get a lung cancer screening test?
National Cancer Institute.Non-small cell lung cancer treatment (PDQ)patient version.
Centers for Disease Control and Prevention.How is lung cancer diagnosed and treated?