Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to radiograph from approximatly 11 hour prior , interstitial edema is slightly worse . This includes increased interstitial markings , dilated mediastinal veins , and dilated azygos . Focal consolidation in the right lower lung is not as apparent as on prior radiograph . The heart size is normal . There is no large pleural effusion or pneumothorax . Old posterior right 7th rib fracture is noted .
    OUTPUT:
    
Mild interstitial edema , slightly worse compared to 11 hours prior . Superimposed pneumonia , particularly in the right lower lung is possible .