Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low . A similar faint linear density in the left lower lung as seen previously may represent a focus of scarring . No convincing evidence for pneumonia or edema . No pleural effusion or pneumothorax . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No convincing evidence for pneumonia .