Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lungs appear hyperinflated with flattened diaphragms . There is mild linear atelectasis at the left lung base . There is no worrisome consolidation , effusion or pneumothorax . No congestion or edema . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process .