Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal upright and lateral chest radiographs demonstrate well - expanded lungs with mild enlargement of the cardiac silhouette , unchanged compared to the prior examination . Mediastinal contour is unremarkable . Lungs are clear without focal areas of consolidation . Compression wedge deformity of the thoracic spine appears unchanged . There is no pleural effusion . There is no pneumothorax .
    OUTPUT:
    
No evidence of pneumonia .