Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: At the apex of the right upper lung , there is a rounded opacity projecting over the third posterior rib . There is no deviation of the trachea and the paratracheal stripe maintains normal thickness . The mediastinum appears normal . There are calcifications seen in the aortic arch . No pneumothorax or pleural effusion is evident . No large consolidation to suggest pneumonia is seen . Mild degenerative changes are seen in the acromioclavicular joint . There is bibasilar atelectasis .
    OUTPUT:
    
Mass - like opacity in the right upper lung for which contrast - enhanced CT of the chest is recommended .