Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours unremarkable . Low lung volumes result in crowding of bronchovascular structures . No overt pulmonary edema is present . Patchy atelectasis is demonstrated in the lung bases without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are detected .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis .