Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Evaluation of the lateral views is limited due to patient 's arm positioning . The lung volumes are low which causes apparent enlargement of the cardiac silhouette . The aorta is slightly unfolded . The lungs are clear without focal opacity , pleural effusion or pneumothorax . There are degenerative changes in the right acromioclavicular and coracoclavicular joints .
    OUTPUT:
    
No opacity concerning for pneumonia .