Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs were obtained . The lung volumes are low . There is no focal consolidation , pleural effusion or pneumothorax . The cardiac silhouette is mildly enlarged . The mediastinal and hilar contours are within normal limits . There is no free air beneath the hemidiaphragms .
    OUTPUT:
    
No evidence of pneumonia .