Figure 1.

Premature newborn, at two days of life, presenting NEC. A: Conventional X-ray of the abdomen, in the supine position with vertical rays, showing distension of intestinal loops, intestinal pneumatosis, air in the portal system, and pneumoperitoneum (arrowheads). B: Conventional X-ray, in the supine position with horizontal rays, showing extensive pneumoperitoneum, visible between the anterior abdominal wall and the intestinal loops (arrowheads). Rigler’s sign (the walls of the intestinal loops visible) present. The newborn evolved to death.