Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear bilaterally without an opacity convincing for pneumonia . Cardiomediastinal silhouette is stable relative to prior examination , the heart mildly enlarged . There is no evidence of pulmonary edema . There is no large pleural effusion or pneumothorax . There is no air under the right hemidiaphragm .
    OUTPUT:
    
No focal opacity convincing for pneumonia .