Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The moderate left pleural effusion is unchanged . Prominent interstitial lung markings in the left lung are also unchanged , and remain concerning for lymphangitic spread of metastasis . Left - sided volume loss is unchanged . The right lung remains clear . There is no pneumothorax . The heart and mediastinum can not be accurately assessed .
    OUTPUT:
    
No significant interval change .