Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low which accentuates the size of the cardiac silhouette which appears mildly enlarged . Mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Minimal streaky atelectasis is seen at the lung bases without focal consolidation . No pleural effusion or pneumothorax is identified . No acute osseous abnormality is detected .
    OUTPUT:
    
Mild atelectasis in the lung bases .