Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . There is no focal consolidation , pleural effusion or pneumothorax . Linear opacities at the left base are slightly increased since the prior and may represent atelectasis versus scarring . Linear opacity at the right base also may be atelectasis / scarring . Cardiomediastinal silhouette is normal . Bony structures are unremarkable . Hyperinflation .
    OUTPUT:
    
No acute cardiopulmonary process . Scarring versus atelectasis at the bases .