Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size is normal . The mediastinal and hilar contours are unchanged . Pulmonary vasculature is normal . Streaky linear opacities in both lung bases compatible with atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . Moderate dextroscoliosis of the thoracic spine is demonstrated .
    OUTPUT:
    
Bibasilar atelectasis . No evidence for congestive heart failure .