Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate low lung volumes , which resulted in a heart which is top normal in size . The cardiomediastinal is normal . The lungs are clear without pulmonary edema or focal consolidation . Old left lateral rib fractures are noted , with adjacent pleural thickening . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of pneumonia .