Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . Cardiac silhouette size is normal . Mediastinal and hilar contours are within normal limits . There is minimal atelectasis in the lung bases . No focal consolidation , pleural effusion , pulmonary edema , or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Bibasilar atelectasis but no evidence for pulmonary edema .