Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . The heart is normal in size , and cardiomediastinal silhouette is unremarkable . Lungs are symmetrically expanded without focal consolidation . There is no pleural effusion or pneumothorax . Linear opacities at the right base are less conspicuous compared to the prior examination and likely reflect atelectasis . Hardware noted in the neck .
    OUTPUT:
    
No evidence of pneumonia . Perihilar prominence suggests mild congestion .