Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are within normal limits . Lung volumes are low . There is mild pulmonary vascular congestion . Streaky atelectasis is noted in the lung bases without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormality is visualized .
    OUTPUT:
    
Mild pulmonary vascular congestion and mild bibasilar atelectasis .