When people spoke of stage 4 lung cancer survival rates, it is impossible to predict how long someone will live with their cancer. The statistics apply only to averages, which consists of more living and less time living.
Some have stage 4 inoperable lung cancer. Less than 5 in 100 people (less than 5%) diagnosed with stage 4 non-small cell lung cancer live for at least 5 years. My guess was perhaps only a year with palliative chemotherapy.
Chemotherapy treatments have not traveled some of the tumors of patients and have grown some, but lifestyle and diet change, along with a positive attitude, some still survive, some are still living with her until many years.
Some cure your cancer stage 4 with the consumption of hot peppers, garlic and fish oil. Some patients were using evening primrose oil instead of fish oil. Perhaps you could try something that does not make a person sick for treatment with the recommended dietary intake.
Most times doctors do not want to remove part of lung because of their ability to survive the surgery is not 100% and some will treat 2 times a day with a breathing machine and a steroid treatment. Please do not give up and make sure that refuse to be depressed and always look around and say that you can help another person do what some guys just do. When they say they will die within a year, please tell them they are not of God and there is no due date yet.