Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest provided . Compared to prior study from 2 days ago , there is little change . Again seen is significant elevation of the right hemidiaphragm , likely secondary to phrenic nerve injury and pleural effusion , unchanged in extent . Large right hilar and mediastinal mass is again seen . Left lung is essentially clear . Mild cardiomegaly appears chronic .
    OUTPUT:
    
No significant change since prior study from 2 days ago .