Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Extensive calcified pleural plaques bilaterally suggest prior asbestos exposure and slightly limit evaluation of the underlying lung parenchyma . Within this limitation , there is no radiographic evidence for new pulmonary consolidation . No pleural effusion , pneumothorax , or pulmonary edema is detected . Heart and mediastinal contours are stable with aortic tortuosity and mild cardiomegaly .
    OUTPUT:
    
Extensive calcified pleural plaques , suggestive of prior asbestos exposure , without definite sign of pneumonia .