Necrotizing enterocolitis and perforation. Note free air over liver (arrow), portal venous gas (arrowheads) and extensive pneumatosis (open arrows), involving small and large bowel. * indicates "target sign" of pneumatosis of the splenic flexure of the colon

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Key words: NEC, necrotizing enterocolitis, peritonitis, perforation, pneumatosis, portal venous gas, pneumoporta, portal vein