Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is again seen evidence of previous endovascular repair of AAA . The cardio mediastinal silhouettes are unchanged . The bilateral hila are not well visualized . There are again seen low lung volumes and widespread increased interstitial opacities consistent with known pulmonary fibrosis . Grossly , there is no interval change in appearance of lungs in comparison to prior radiograph , although evaluation for secondary processes such as superimposed infection is limited given the extent of fibrosis . There is poor visualization of the right lateral CP angle which may signify a small right pleural effusion , although this is difficult to evaluate given extensive fibrosis . There are no pneumothoraces .
    OUTPUT:
    
Low lung volumes and interstitial opacities consistent with known pulmonary fibrosis . Possible small right pleural effusion . No other significant interval changes .