The most significant auxiliary examination for diagnosis of neonatal necrotizing enterocolitis is ().

The main manifestations of neonatal necrotizing enterocolitis are pneumatosis of intestinal wall and inflation of portal vein, paralytic intestinal obstruction, widening of intestinal septum, partial fixation of intestinal loop (suggesting that the intestinal lesion is serious), ascites and pneumoperitoneum. Abdominal X-ray plain film is of great significance for diagnosis.