Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . This accentuates the size of the cardiac silhouette which is mildly enlarged . Mediastinal and hilar contours are unremarkable . Crowding of bronchovascular structures is demonstrated . Streaky opacities in the lung bases likely reflect areas of atelectasis . No focal consolidation , pleural effusion or pneumothorax is visualized . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes with streaky bibasilar opacities , likely atelectasis .