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 . There is no pleural effusion or pneumothorax . No evidence of pulmonary edema . An azygos fissure is noted . No free air under the right hemidiaphragm is present . Degenerative changes involve bilateral acromioclavicular joints and left shoulder joint .
    OUTPUT:
    
No evidence of pneumonia .