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 otherwise unremarkable . Pulmonary vasculature is normal . Atelectasis is noted in both lung bases without focal consolidation . No pleural effusion or pneumothorax is identified . No acute osseous abnormality is detected .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis .