Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are normal . Normal size of the cardiac silhouette . Normal hilar and mediastinal structures . Unchanged appearance of the spine on the lateral chest radiograph . No pneumonia , no pulmonary edema . No pleural effusions . Mild elevation of the right hemidiaphragm is demonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality .