Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The hilar and mediastinal contours are within normal limits . The lung volumes are low , resulting in bronchovascular crowding . Linear bibasilar opacities are most compatible with atelectasis , minimally changed since the ___ examination . No superimposed pneumothorax , focal consolidation , or pleural effusion is seen .
    OUTPUT:
    
No acute intrathoracic process .