Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . The heart is top normal in size , and cardiomediastinal contours are unremarkable . Mild deviation of the trachea to the right and widening of the mediastinum is unchanged . Thoracic aorta is tortuous . Lungs are well expanded and clear with minimal basal atelectasis . A small nodule projecting over the fifth posterior rib on the right is unchanged . No pleural effusions or pneumothorax .
    OUTPUT:
    
No significant changes compared to the prior study .