Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is mildly enlarged but similar when compared to the prior study . The mediastinal and hilar contours are normal . The pulmonary vascularity is not engorged . The lungs are clear of any focal consolidation . There is minimal atelectasis within the left lung base . No pleural effusion or pneumothorax is seen . There is no acute osseous abnormality .
    OUTPUT:
    
Minimal left basilar atelectasis .