Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is moderately enlarged . The mediastinal and hilar contours are grossly unremarkable . There is no overt pulmonary edema . Patchy atelectasis is seen in the lung bases without definite consolidation . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Minimal bibasilar atelectasis .