Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Pigtail catheter projects over the right lower hemithorax , unchanged . ETT in standard position . Left IJ approach central venous catheter tip also unchanged projecting over the right atrium . Left PICC tip also unchanged . Diffuse bilateral airspace opacities are indicated . Interval increase in right lower lobe opacity is concerning for developing pneumonia . Opacity in the left lobe is also unchanged . No pleural effusion . No pneumothorax . Cardiomediastinal silhouette unchanged .
    OUTPUT:
    
1 . Bilateral airspace opacity is consistent with ARDS . 2 . Interval increase in right lower lobe opacity is concerning for concurrent right lower lobe pneumonia .