Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low . Bibasal atelectasis noted without convincing signs of pneumonia or edema . No large effusion or pneumothorax is seen . Cardiomediastinal silhouette is stable . Bony structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process . Mild bibasilar atelectasis .