Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiograph demonstrates clear lungs bilaterally . There is no pleural effusion . A dilated or tortuous descending aorta is noted . Cardiomediastinal and hilar contours are otherwise unremarkable . No evidence of over pulmonary edema . Osseous structures demonstrates no acute abnormality .
    OUTPUT:
    
No focal opacity convincing for pneumonia .