Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild enlargement of cardiac silhouette which is unchanged . The mediastinal and hilar contours are similar . The pulmonary vasculature is not engorged . Streaky left basilar opacity is similar compared to the previous exam and likely reflects atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormalities seen .
    OUTPUT:
    
Minimal left basilar atelectasis .