Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is diffuse increase in interstitial markings bilaterally , increased compared to the prior study , consistent with patient 's known diffuse interstitial fibrotic lung disease raising concern for worsening of the interstitial lung disease with possible superimposed vascular congestion . No large pleural effusion is seen although trace pleural effusion would be difficult to exclude . There is no pneumothorax . The cardiac and mediastinal silhouettes are grossly stable . Aortic knob calcification is re - demonstrated .
    OUTPUT:
    
Worsened diffuse increase in interstitial markings bilaterally in this patient with known history of diffuse fibrotic interstitial lung disease , concerning for progression of interstitial lung disease and / or possible superimposed vascular congestion .