Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an opacity in the right lower lobe that is new from the prior radiograph on ___ , which could partially represent atelectasis and vascular structures , but pneumonia is not excluded in the appropriate clinical setting . There is no pneumothorax or large pleural effusions . Heart size remains moderately enlarged . No acute osseous abnormalities are identified .
    OUTPUT:
    
New right lower lobe opacity , which could represent atelectasis but pneumonia should be considered in the appropriate setting .