Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are hyperinflated , with flattening of the diaphragms , suggesting chronic obstructive pulmonary disease . There is minor bibasilar atelectasis . No focal consolidation is seen . There is no pleural effusion . There is no large pleural effusion , or evidence of pneumothorax . The cardiac silhouette is top normal to mildly enlarged . Mediastinal contours are unremarkable . The aortic knob is calcified .
    OUTPUT:
    
COPD without definite acute cardiopulmonary process .