Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Cardiac and mediastinal silhouettes are unremarkable . The cardiac silhouette is not enlarged .
    OUTPUT:
    
No acute cardiopulmonary process . Specifically , the cardiac silhouette is not enlarged .