Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , which exaggerates the heart size as well as AP projection which also exaggerates the heart size . Retrocardiac atelectasis is present . Pulmonary vasculature is prominent . No large pleural effusion or pneumothorax is seen . Subdiaphragmatic drains are present as is an endo - intestinal tube with its side port below the diaphragmatic hiatus .
    OUTPUT:
    
Low lung volumes and retrocardiac atelectasis ; pulmonary vascular congestion likely from recent surgery / IV fluids .