Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi upright radiograph of the chest demonstrates increased opacification of the bilateral bases , left greater than right , consistent with atelectasis . Pneumonia could be considered in the appropriate clinical setting . There is fluid in the right major fissure . Cardiomegaly is stable . There is no pneumothorax . The nasogastric tube ends in the stomach with the last side port below the GE junction .
    OUTPUT:
    
1 . Retrocardiac opacity may represent atelectasis , however pneumonia could be considered in the appropriate clinical setting . 2 . Nasogastric tube ends in the stomach with the last side port below the GE junction .