Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Nasogastric tube now terminates in the stomach , sideport at the esophagus . Lung volumes are low . There is persistent elevation of the right hemidiaphragm . The left hemidiaphragm is obscured by retrocardiac opacity . The left costophrenic angle is not fully imaged . There is no right pleural effusion . No pneumothorax . Hilar and mediastinal silhouettes are unchanged . Heart size is top normal . No pulmonary edema .
    OUTPUT:
    
1 . Nasogastric tube terminates in the stomach , side port likely at the esophagus . 2 . Retrocardiac opacities may represent atelectasis , aspiration or infection in the correct clinical setting .