Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior radiograph from ___ , there is a new retrocardiac consolidation , concerning for a pneumonic process . There is a right lower lobe consolidation corresponding to pleural scarring seen on prior chest CTA examination . The cardiac and mediastinal contours are unchanged . There is marked tortuosity of the aorta . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Retrocardiac consolidation concerning for a new pneumonic process .