Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Extensive calcified pleural plaques , which appear unchanged from ___ , limit assessment for underlying pneumonia . However , the right diaphragm is less distinct than on previous examination which may suggest early pneumonia . Postoperative mediastinum , hila , and cardiac silhouette are unchanged . There is no pleural effusion or pulmonary edema .
    OUTPUT:
    
Although assessment is limited by extensive pleural plaques , the right diaphragm is less distinct than on previous examination with adjacent subtle opacity , which may suggest early right basilar pneumonia in the appropriate clinical setting .