Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded and clear . No evidence of pneumonia pulmonary edema , or pleural effusion . Elevation of the right hemidiaphragm is unchanged from ___ . Mediastinal contours , hila , and cardiac silhouette are normal . The aorta is tortuous .
    OUTPUT:
    
No evidence of pneumonia .