Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . ETT is in place with its tip residing approximately 2 .9 cm above the carina . An NG tube courses into the left upper abdomen . Interstitial opacities are similar to prior in this patient with interstitial lung disease . No large effusion or pneumothorax . Difficult to exclude a subtle superimposed pneumonia though overall pattern of interstitial opacity is unchanged . Cardiomediastinal silhouette is stable . Bony structures appear intact .
    OUTPUT:
    
ET and NG tubes positioned appropriately . Unchanged pattern of interstitial opacities compatible with known interstitial lung disease .