Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest radiograph . Moderate cardiomegaly , median sternotomy wires , and mediastinal clips are all unchanged . The pulmonary vasculature is dilated , as shown on same - day CTA . There is scarring in the lung bases that is worsen when compared to ___ . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Worsening bibasilar scarring .