Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patchy right base opacity is worrisome for pneumonia . Minimal vascular congestion persists . No pleural effusion or pneumothorax is seen . Cardiac mediastinal silhouettes are stable . The patient is status post median sternotomy .
    OUTPUT:
    
Patchy right basilar opacity with possible involvement of the right middle lobe as well , worrisome for pneumonia .