Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse increase in interstitial markings bilaterally is re - demonstrated in this patient with chronic lung disease . There is slight increase in opacities bilaterally , which may be due to acute worsening of chronic lung disease versus overlying mild edema versus superimposed infectious process . The cardiac and mediastinal silhouettes are stable . Hilar contours are grossly stable . There is slight blunting of the bilateral costophrenic angles which could be due to trace pleural effusions versus pleural thickening multiple rib deformities on the right are again seen .
    OUTPUT:
    
Re - demonstrated chronic lung disease . Interval increase in opacity in the lungs bilaterally , particularly at the lung bases which may be due to superimposed infection , worsening of chronic lung disease , or superimposed edema .