Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Left - sided pacer device is stable in position . New since the prior study is moderate to severe pulmonary edema . There is also a new right mid to lower lung opacity suggesting large pleural effusion with overlying atelectasis , underlying consolidation not excluded . Right perihilar mass with associated mediastinal lymphadenopathy was better assessed on prior CT / PET CT .
    OUTPUT:
    
Large right pleural effusion with overlying atelectasis , underlying consolidation not excluded . Right perihilar mass and mediastinal adenopathy better assessed on prior CT . Left perihilar opacity could relate to pulmonary edema versus underlying disease spread or infection .