<prompt> True about neonatal necrotizing enterocolitisAbdominal distensionPneumoperitoneumDecreased bowel soundsAll of the above  <response>: Neonatal necrotizing enterocolitis Neonatal necrotizing enterocolitis is the most common life-threatening emergency of the gastrointestinal tract in the newborn period.The disease is characterized by a various degree of mucosa or transmural necrosis of the intestine.It occurs in premature or small for gestational age LBW infants.Clinical manifestations of necrotizing enterocolitis can be devided into 3 stages :Stage I : Suspected Unstable temperature, apnea, bradycardia, lethargy. Mild abdominal distension, vomiting blood in stool. Above signs Bowel sounds are diminished, with or without abdominal tendernessStage II : Definite In more severe cases : Metabolic acidosis and mild thrombocytopenia X-Ray : Pneumatosis intestinalis and dilation of interesting.Stage III : Advanced Above signs infant has low BP, bradycardia, apnea, acidosis, DIC, anuriaFrank signs of peritonitis with abdominal tenderness, distension and erythema of abdominal wall.X-Ray : shows Pneumoperitoneum. 