Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Both lungs are well expanded with the mild flattening of the both hemidiaphragms and mild increased AP diameter of the chest suggesting COPD . No opacities concerning for pneumonia or pulmonary edema . There is no pleural effusion . Mediastinal and hilar contours are within normal limits .
    OUTPUT:
    
COPD . Pneumonia / pulmonary edema .