Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable supine view of the chest . There has been interval intubation with the tip of the endotracheal tube residing approximately 4 cm above the carina . Mild cardiomegaly and pulmonary interstitial edema persists . No large effusions are present .
    OUTPUT:
    
ET tube positioned appropriately . Persistent cardiomegaly and interstitial pulmonary edema .