Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are re- demonstrated . The cardiac silhouette appears mildly enlarged . The mediastinal and hilar contours are similar . Pulmonary vasculature is not engorged . Persistent eventration of the hemidiaphragms are noted bilaterally with associated bibasilar patchy opacities , likely atelectasis . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Persistently low lung volumes with patchy opacities in lung bases , likely atelectasis , though infection is not excluded in the correct clinical setting .