Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates clear lungs bilaterally . Cardiomediastinal and hilar contours are within normal limits as is pulmonary vasculature . There is no pneumothorax or pleural effusion . No evidence of pulmonary edema . There is no air under the right hemidiaphragm .
    OUTPUT:
    
No opacity convincing for pneumonia .