Hover over the image to see the labels. A = Endotracheal tube placed too low. There is collapse of the right upper lobe (though you would also be concerned about future collapse of the left lung given the placement of the ETT). B = Gas in the bowel wall. Note the linear lucencies, but also the soap bubble appearance to the bowel in the right lower quadrant. C = Gas in the portal venous system. D = Nasogastric tube. Also, note the dilated bowel.

• NEC = idiopathic enterocolitis
• 1-3/52 after premature birth
• Probably both ischaemic and infective in aetiology
• Treatment is with parenteral nutrition, antibiotics and, if required, surgery