“…Therefore, without measuring serum pancreatic enzymes and/or performing either transabdominal ultrasonograpy or CT, AP cannot be diagnosed. According to previous pediatric studies in AP, abdominal pain is present in 66 to 95% of the children with AP [18,19,20,21,22,23,24]; however, inconsistency and high variability exist between the studies. Most of the trials investigating the characteristics of abdominal pain have either low numbers or missing parameters causing inconsistencies between their data.…”