Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . A right paramediastinal mass is again seen with convex bulging of the right paratracheal stripe as on prior exam . There may be interval increase in size of this mass as compared with prior exam though this can be further assessed on CT . Lungs remain relatively clear . Heart size is stable . Bony structures appear intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Right paramediastinal mass , appear slightly larger than on prior exam . No evidence of pneumonia .