Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Small left pleural effusion persists with adjacent atelectasis in the left lung base . No new focal consolidation or pneumothorax is seen . No acute osseous abnormalities are demonstrated .
    OUTPUT:
    
Small left pleural effusion and adjacent left basilar atelectasis . No new focal consolidation .