According to the U.S. Preventive Services Task Force (USPSTF), screening for large cell carcinoma of the lung by low-dose computed tomography is recommended every year among smokers who are between 55 to 80 years old and who have history of smoke 30 pack-years or more and either continue to smoke or have quit within the past 15 years (grade B recommendation).^[1]</nowiki>^[2][3]

• The table below summarizes the screening eligibility for non-small cell lung cancer screening by different organizations.

Screening Guidelines for Non Small Cell Lung Cancer Adapted from Center of Disease Control and Prevention (CDC). 2016 [4]
Organization	Groups eligible for screening	Year
American Academy of Family Practice	Evidence is insufficient to recommend for or against screening	2013
American Association of Thoracic Surgery	Age 55 to 79 years with 30 pack year smoking history Long term lung cancer survivors who have completed 4 years of surveillance without recurrence and who can tolerate lung cancer treatment following screening to detect second primary lung cancer until the age of 79 Age 50 to 79 years with a 20 pack year smoking history and additional comorbidity that produces a cumulative risk of developing lung cancer ≥ 5% in 5 years	2012
American Cancer Society	Age 55 to 74 years with ≥30 pack year smoking history, who either currently smoke or have quit within the past 15 years, and who are in relatively good health	2015
American College of Chest Physicans	Age 55 to 74 years with ≥30 pack year smoking history,who either currently smoke or have quit within the past 15 years	2013
American Society of Clinical Oncology	Age 55 to 74 years with ≥30 pack year smoking history,who either currently smoke or have quit within the past 15 years	2012
American Lung Association	Age 55 to 74 years with ≥ 30 pack year smoking history and no history of lung cancer	2012
Medicaid Services	Age 55 to 77 years with ≥ 30 pack year smoking history and smoking cessation < 15 years	2015
National Comprehensive Cancer Network	Age 55 to 74 years with ≥30 packyear smoking history and smoking cessation < 15 years OR Age ≥ 50 years and ≥20 pack year smoking history and additional risk factor (other than secondhand smoke exposure	2015
U.S Preventive Services Task Force	Age 55 to 80 years with ≥30 pack year smoking history and smoking cessation < 15 years	2013

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