Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal upright and lateral chest radiographs demonstrate well - expanded lungs . High position of IVC filter is again noted , but remains unchanged . Heart is normal in size and cardiomediastinal contour is unremarkable . There is no focal area of consolidation to suggest pneumonia . There is no pulmonary edema . There is no pleural effusion or pneumothorax . Degenerative changes are again seen throughout the thoracic spine .
    OUTPUT:
    
No evidence of pneumonia .