A member asked:

Why is state iv lung cancer so deadly and hard to treat?

11 doctors weighed in across 3 answers

Too advanced: Stage IV means that the cancer has spread beyond the lungs throughout the body. Chemotherapy may fight it but it also kills normal cells that is why it is so hard to treat. Hope this helps.

Answered 6/18/2022

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Can be...: However the molecular profile of the tumor can be analyzed to personalize chemotherapy treatment.

Answered 9/13/2012

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Damaged genes: Cancer that has gotten this far invariably has its genome so destabilized that it will mutate to resist any non-surgical treatment. Stage IV also indicates that surgery to remove it would be impossible because taking vital structures would be required.

Answered 6/10/2014

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