Flynn-O'Brien KT, et al. - Researchers aimed to assess the significance of costal margin tenderness (CMT) for identifying children with intraabdominal injuries (IAI) found on computed tomography (CT) and IAI undergoing acute intervention. An analysis of the Pediatric Emergency Care Applied Research Network (PECARN) IAI public use data set, representing a large prospective multicenter cohort study, was performed from May 2007 to January 2010. They identified 9,174 children with Glasgow Coma Scale scores of 14 or 15 who sustained blunt torso trauma; 1,267 (13.8%) had CMT (177 (14.0%) had isolated CMT and 1,090 (86.0%) had nonisolated CMT). The risk of IAI associated with isolated CMT was noted to be minimal. Abdominal CT scan was of low yield for children with blunt abdominal trauma and isolated CMT.