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It depends on the patient's general condition, whether he can look after himself, can walk and do some physical work, his nutrition status, mental health (whether he is suffering from depression, etc.), also whether he is suffering from any chronic diseases like diabetes, hypertension, cardiac diseases, etc.
It looks a stage-4 lung cancer (final confirmation still pending). Only 20 percent survive more than one year. After full details of the histopathology report, including IHC and molecular study, the picture will be clearer, showing responsiveness to treatment and aggressiveness of the tumor.
I hope this helps.