Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . Heart size is normal . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is normal . Apart from mild atelectasis in the lung bases , the lungs are clear . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild bibasilar atelectasis without focal consolidation to suggest pneumonia . No congestive heart failure .