Cancer of the Lung And SeneScencE - Prospective Cohort 1

This study is following older patients with non-small cell lung cancer (a common type of lung cancer) to understand how aging-related changes in the body affect their recovery from surgery. The goal is to improve surgical planning and outcomes for elderly patients. **You may be eligible if...** - You are 70 years or older - You have early to locally advanced lung cancer (stage I–IIIA) that may be lung cancer based on scans or confirmed by biopsy - You are being considered for surgery to remove the cancer - You are enrolled in the French social security system **You may NOT be eligible if...** - You have been diagnosed with another active cancer (other than certain treated skin or prostate cancers) in the last 6 months - You are legally under guardianship or not able to give informed consent - You cannot understand or agree to the study requirements Talk to your doctor to see if this trial is right for you.