American Cancer Society R American Cancer Society survival rate "Non-Small Cell Lung Cancer Survival Rates, by Stage" Non-Small Cell Lung Cancer Survival Rates 5-year relative survival rate American Cancer Society 5-year survival is only 45-50% survival rate American Cancer Society poor prognosis Non-Small Cell Lung Cancer Survival Rates American Cancer Society American Cancer Society 68 and 92 percent American Cancer Society survival rate American Cancer Society "Non-Small Cell Lung Cancer Survival Rates, by Stage" American Cancer Society Non-Small Cell Lung Cancer Survival Rates, by Stage American Cancer Society at least 5 years rate Non-Small Cell Lung Cancer Survival Rates, by Stage American Cancer Society American Cancer Society carries about a 50-50 chance of survival American Cancer Society American Cancer Society rate survival rate American Cancer Society NSCLC