Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is normal in size . The hilar and mediastinal contours are within normal limits . There is mild atelectasis at the left lung base . No focal consolidation , pleural effusion or pneumothorax is present .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Mild atelectasis at the left lung base . If clinical concern for an infectious process at this site , short interval follow - up can be considered .