How long a patient with lung cancer can survive depends on which stage the lung cancer is discovered when it is discovered. Lung cancer can be divided into different stages: stage I, stage II, stage III, and stage IV.

Stage I indicates early-stage lung cancer, and stage IV indicates that it has metastasized and is late-stage lung cancer. The survival time of lung cancer at different stages is different.

Stage I lung cancer has the longest survival time. When we talk about the five-year survival rate, stage I is usually above 80%, stage II is about 70%, and stage III is about 40%. ~50%, stage IV is about 20%, so different patients have different survival times depending on the stage.

If he was diagnosed with advanced lung cancer at the beginning, he might only have half a year to a year to survive if not treated. If it is early-stage lung cancer, after treatment, he will have no problems and can return to a life span that is completely the same as that of normal people.