
Post-Treatment Decline in Lung Function and Breathing Difficulty — How to Understand and Cope
After lung cancer treatment ends, one of the most noticeable issues for many patients is breathing becoming labored: shortness of breath when walking or climbing stairs, chest tightness during deep breaths, persistent dry cough, severe panting after activity, and even a feeling of chest compression when lying down or waking up coughing at night. These symptoms are very common in lung cancer patients, especially those who received chest radiotherapy, platinum-based chemotherapy (such as cisplatin or carboplatin), or lung lobectomy surgery, with incidence rates reaching 40–70%. It is not simply “stamina not yet recovered,” but direct damage from treatment to alveoli, airways, and pulmonary interstitium — one of the most typical and long-term sequelae after lung cancer treatment, significantly affecting physical endurance and quality of life.








