Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . The lungs are well inflated , and there is no evidence of focal consolidation , pleural effusion , or pneumothorax . The previously seen right perihilar linear opacifications persist on this study and may represent scarring . Moderate cardiomegaly is again seen , and sternotomy wires are unchanged .
    OUTPUT:
    
No pneumonia , effusion , or pneumothorax . Persistent right perihilar opacification may represent scarring . If it is clinically justified to investigate this area , CT of the thorax with IV contrast is recommended .