Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lower thoracic spinal fusion hardware is unchanged . The heart size is at the upper limits of normal . Mediastinal contours are within normal limits . Increasing opacity at the right cardiophrenic angle is seen and may correlate to either a dual density projecting over the anterior heart or the spine on lateral view . Additionally a focus of plate atelectasis is seen in the right mid lung . Mild new pulmonary vascular prominence suggests mild congestion . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
Increasing right cardiophrenic angle opacity ; in the appropriate clinical setting may represent pneumonia . Findings also suggesting mild vascular congestion .