Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . There are no focal consolidations , pleural effusion or pneumothorax . Subtle prominence of the right pulmonary hilum reflects known mass . A subtle perihilar nodular opacity projecting over the right mid to lower lung may reflect spread of tumor , as seen on the prior PET - CT . The cardiac silhouette is laterally enlarged , which is unchanged . The aorta is tortuous . There is a chronic deformity of the distal left clavicle .
    OUTPUT:
    
Right hilar mass without convincing evidence for a superimposed pneumonia .