I had a chest x-ray and it states that my lungs were overinflated due to chronic airflow limitation. But a Spirometry test for Asthma has shown my results okay. DLCO total was 72% of the predicted. Is the x-ray wrong according to these other test results as the spirometry doesn't suggest airflow problems. A saline challenge test made me cough and gave chest tightness and I couldn't inhale deep enough to give enough good results for this test to be finished. Any comments would be nice to stop me wondering as my doctor doesn't give me many details. Thank you for your time.