Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiographs were obtained . The lungs are well expanded . The left pleural effusion and overlying atelectasis may be slightly larger compared with ___ . There is no new consolidation or pneumothorax . Cardiomegaly has slightly progressed since ___ . Aortic tortuosity is similar . Median sternotomy wires are intact . Mitral valve prosthesis is well seated . Right axillary and epigastric clips are in unchanged positions . Multilevel thoracic vertebral compression fractures are unchanged .
    OUTPUT:
    
Slightly increased size of a left pleural effusion and atelectasis since ___ .