Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is enlarged and improved from ___ study . The hilar contours are improved compared to previous studies . The pleura are unremarkable . No focal opacities , pleural effusions , pulmonary edema , or pneumothorax seen .
    OUTPUT:
    
No evidence of pulmonary edema , pleural effusion , or pneumonia .