Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . There is blunting of the right costophrenic angle which is unchanged compared with multiple prior exams . Retrocardiac consolidations are noted in the left lung base with an associated pleural effusion which is new compared with prior exam . Otherwise , the mediastinal and hilar contours appear stable . Mild vascular congestion again seen . Sternotomy wires are intact .
    OUTPUT:
    
Left lower lobe consolidation with associated pleural effusion may represent atelectasis versus inflammatory consolidation .