hi, thank you for providing the brief history of you. As you mentioned your clinical symptoms I feel all the possible medication has been tried to make sure your problem is solved. but unfortunately your cough, breathlessness and chest pain hasn t come down. What I will explore here is that the lung tissues are treated with simple way and naturally. As most medication are symptomatic and not a cure purpose basis. For the cough and breathlessness this happens due to poor respiratory system. The best way to improve the poor respiratory system is by improving the lung capacities in the form of doing regular breathing exercises and nebulization. Now nebulization will help loosen the mucous and and breathing exercises will help improve the strength in the respiratory system. the chest pain is due to the weakness of the respiratory muscles as the respiratory muscles wioo get tired and fatigue due to breathlessness and heavy work of the respiratory system. Now in my clinical practice most patients with such issues are referred to physical therapy for strengthening the respiratory muscles and most of them are above 80+ , who gets helped for their breathlessness issue. Regarding the operation, I will advice you to try out physical therapy for regaining strength of the respiratory muscles and you can surely avoid the surgery. as per me I do not feel the operation will solve your problem. Regards Jay Indravadan Patel