Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were provided . Opacity overlying the right hilus is consistent with known mass and lymphadenopathy . There is no pleural effusion or pneumothorax . Linear opacity at the left base is likely atelectasis . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Opacity overlying the right hilus is consistent with known mass and hilar lymphadenopathy . Atelectasis in the left base .