Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: On the lateral view , there appears to be subtle retrosternal opacity which may be due to atelectasis although consolidation due to infection is not excluded in the appropriate clinical setting . No focal consolidation is seen elsewhere . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
On the lateral view , there is subtle retrosternal opacity which may be due to atelectasis although consolidation due to infection is not excluded in the appropriate clinical setting . No focal consolidation is seen elsewhere . Attention at follow - up .