Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine radiograph of the chest demonstrates low lung volumes which results in bronchovascular crowding . Vague opacity in the right mid lung field may represent fluid in the fissure . There has been interval clearing at the right base , but there is persistent atelectasis at the left base . The cardiomediastinal and hilar contours appear unchanged . Endotracheal tube ends 3 .1 cm from the carina . Left - sided central line and is approximately at the cavoatrial junction . The chest tubes project over the bilateral hemi thoraces . A nasogastric tube courses into the stomach in out of the field of view .
    OUTPUT:
    
Interval clearing at the right base with persistent atelectasis at the left base .