Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is left base linear atelectasis / scarring . No focal consolidation is seen . There is no pleural effusion or pneumothorax . The lungs are relatively hyperinflated , with flattening of the diaphragms , suggesting chronic obstructive pulmonary disease . The cardiac silhouette is mildly enlarged . The aorta is calcified and tortuous .
    OUTPUT:
    
Mild left base linear atelectasis / scarring . Mild cardiomegaly with left ventricular configuration . No evidence of pneumonia .