Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been no interval change compared to the prior radiograph performed earlier on the same date . There is no pleural effusion or pneumothorax . There is biapical scarring , right greater than left . Prominent bilateral interstitial markings is more pronounced at the left lung base , which may reflect a component of chronic lung disease / fibrosis . Superimposed acute findings in the left base can not be excluded . Mild cardiomegaly . No acute osseous abnormalities identified .
    OUTPUT:
    
1 . Prominent bilateral interstitial markings may reflect chronic lung disease . However , given asymmetric appearance , in the lower lobes left greater and right , correlation with CT is recommended , if not previously obtained . 2 . Mild cardiomegaly .