Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is borderline enlarged . The mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Streaky bibasilar opacities likely reflect areas of atelectasis . No large pleural effusion or pneumothorax is identified although the extreme left costophrenic angle is excluded from the field of view . There are multilevel degenerative changes noted in the thoracic spine .
    OUTPUT:
    
Streaky bibasilar airspace opacities , likely atelectasis