Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A calfified pleural plaque overlies the right diaphragm apex and additional plaques are identified bilaterally , findings indicative of prior asbestos exposure . Interstial opacities are present bilaterally which may reflect underlying pulmonary fibrosis though no comparison images are available . Alternatively findings could reflect interstial pulmonary edema as there is engorgement of the azygous vein , though a normal heart size . A third alternative could be atypical infection . Consider chest CT for further characterization if clinically indicated . There is no pneumothorax or large pleural effusion .
    OUTPUT:
    
1 . Diffuse interstitial opacities likely pulmonary fibrosis ( evidence of asbestos exposure ) with or without interstial pulmonary edema or atypical infection . 2 . Dilated azygous vein indicates elevated central venous pressure or volume . Consider chest CT for further characterization if clinically indicated .