Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the size of the cardiac silhouette which appears mildly enlarged . The mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Minimal patchy opacities in the lung bases likely reflect atelectasis in the setting of low lung volumes . No pleural effusion , focal consolidation or pneumothorax is present . No acute osseous abnormality is identified .
    OUTPUT:
    
Low lung volumes with probable bibasilar atelectasis .