Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size remains mildly enlarged with a left ventricular predominance . Mediastinal and hilar contours are unchanged . There are low lung volumes which causes crowding of the bronchovascular structures . Hazy and streaky left lower lobe opacity could reflect atelectasis though infection can not be completely excluded . No pleural effusion or pneumothorax is present . Minimal loss of height anteriorly of a lower thoracic / upper lumbar vertebral body is unchanged . Remote left posterior rib fracture is again seen .
    OUTPUT:
    
Streaky and hazy left lower lobe opacity which could reflect atelectasis but infection can not be completely excluded .