Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views the chest . Lung volumes are low . There is a tiny left pleural effusion with minimal left basal atelectasis . Otherwise lungs are clear . No large effusion or pneumothorax The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Mild left basal atelectasis with small left pleural effusion .