Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subtle patchy right lower lobe opacity is seen which may relate to atelectasis and overlying vascular structures but an early consolidation due to pneumonia is not excluded in the appropriate clinical setting . The left lung is clear . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . The patient is status post median sternotomy and CABG . Additional surgical clips are also noted in the upper mediastinum .
    OUTPUT:
    
Subtle patchy right lower lobe opacity may relate to atelectasis and overlying vascular structures , but overlying consolidation due to pneumonia is not excluded in the appropriate clinical setting .