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Blunt pancreatic trauma in children: CT diagnosis
C J Sivit1, M R Eichelberger, G A Taylor
1Department of Diagnostic Imaging and Radiology, Children's National Medical Center, Washington, DC 20010.
Insights
Computed tomography (CT) has limited efficacy in diagnosing pediatric pancreatic injuries after blunt abdominal trauma. Fluid in the lesser sac is a key indicator, but direct signs of pancreatic trauma on CT are often difficult to identify.
Area of Science:
- Pediatric Surgery
- Diagnostic Imaging
- Trauma Care
Background:
- Blunt abdominal trauma is a significant cause of injury in children.
- Pancreatic injuries can be challenging to diagnose accurately in pediatric patients.
- Computed tomography (CT) is a primary imaging modality for evaluating blunt abdominal trauma.
Purpose of the Study:
- To evaluate the diagnostic efficacy of CT for pancreatic injury in children following blunt abdominal trauma.
- To identify reliable CT findings indicative of pancreatic injury in pediatric trauma patients.
Main Methods:
- Retrospective review of 1045 children who underwent CT after blunt abdominal trauma.
- Correlation of CT findings with surgical, autopsy, or clinical follow-up diagnoses of pancreatic injury.
- Analysis of specific CT findings, including fluid in the lesser sac and anterior pararenal space.
Main Results:
- Pancreatic injury was diagnosed in 18 of 1045 children (1.7%).
- CT prospectively identified pancreatic injury in 12 children (67% sensitivity).
- Fluid in the lesser sac was a highly specific (99%) and sensitive (72%) marker for pancreatic injury, while fluid in the anterior pararenal space was less effective.
Conclusions:
- Direct CT signs of pancreatic trauma in children are often subtle and difficult to detect.
- Fluid in the lesser sac is a valuable secondary sign for suspecting pancreatic injury on CT.
- Awareness of CT limitations is crucial for accurate interpretation and to minimize diagnostic errors in pediatric pancreatic trauma.
Abstract:
The purpose of this study is to determine the efficacy of CT in the diagnosis of pancreatic injury after blunt abdominal trauma in children. Pancreatic injury was diagnosed at surgery, at autopsy, or on the basis of the development of clinical pancreatitis or a pseudocyst on follow-up imaging evaluation in 18 of 1045 consecutive children examined with CT after blunt trauma. Types of pancreatic injury included laceration in 11 children, transection in two, contusion in one, and tumor with hemorrhage in one. Three children had clinical pancreatitis without a pancreatic abnormality noted on CT. The pancreatic injury was prospectively identified on CT in 12 children (67%). The presence of fluid in the lesser sac was a useful marker for injury to the pancreas. This was noted in 13 children with pancreatic injury, whereas it was observed in only six (1%) of 1028 children in the absence of pancreatic injury (sensitivity, 72%; specificity, 99%). Fluid in the anterior pararenal space was less helpful in establishing the diagnosis of pancreatic injury (sensitivity, 44%; specificity, 98%). A pancreatic pseudocyst developed in four of the 11 survivors. Our experience shows that direct signs of pancreatic trauma may be difficult to identify on CT. Recognition of the limitations of CT diagnosis of pancreatic injury is important in helping to reduce errors of interpretation.