Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two views of the chest demonstrate unchanged sternal wires and an aortic valve prosthesis . The mediastinum is normal in contour . The heart is top - normal in size , unchanged compared to ___ . There is minimal , if any , central vascular congestion without frank pulmonary edema . No focal consolidation , pleural effusion , or pneumothorax is seen . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
1 . No focal consolidation . 2 . Unchanged heart size , top - normal . Minimal , if any , central vascular congestion without frank pulmonary edema .