Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no pleural effusion or pneumothorax . Increased retrocardiac opacity is noted . A left bronchial stent is in place . Rounded opacity in right upper lobe is unchanged . Other previously noted solid and ground glass nodules in the lungs are better visualized on the prior CT . Cardiomediastinal silhouette is otherwise unchanged , with similar widening compatible with lymphadenopathy . Known left hilar mass is better visualized on prior CT . Bony structures are unremarkable .
    OUTPUT:
    
1 . Increasing retrocardiac opacity , possibly related to atelectasis or infection . 2 . Unchanged left hilar mass , nodular opacity in the right lower lobe , and mediastinal and right hilar lymphadenopathy , all of which are better seen on the prior CT .