Abstract
Background
Incomplete history and concern for occult injury in suspected child abuse occasionally results in CT screenings of the abdomen and pelvis. At our institution, we noted that these exams were infrequently positive.
Objective
To identify clinical or laboratory criteria that may predict intra-abdominal injury and guide the use of abdominal and pelvic CT in this population.
Materials and methods
This retrospective review involved 68 children older than 36 months who had a CT of the abdomen/pelvis for suspected abuse. CT results and patient charts were reviewed for physical exam and historical and laboratory variables.
Results
CTs were positive in 16% of patients (11/68). Hypoactive/absent bowel sounds (P = 0.01, specificity = 94.7%) and AST and ALT values greater than twice normal (P = 0.004 and P = 0.003 respectively, NPV = 93.6%) were significantly associated with positive CTs. Multiple abnormal physical exam or laboratory findings were also significantly associated with positive CTs (P = 0.03 and P = 0.002 respectively, specificity = 91.3% and NPV = 93.6% respectively).
Conclusion
CTs of the abdomen and pelvis are infrequently positive in cases of suspected abuse. To reduce radiation exposure, CTs should only be ordered if there are findings indicating that they may be positive. In our population, these findings include absent/hypoactive bowel sounds, LFTs greater than twice normal and ≥2 abnormal labs or physical exam findings.
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Acknowledgement
Michigan Institute for Clinical and Health Research (MICHR) grant: UL1RR024986.
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Trout, A.T., Strouse, P.J., Mohr, B.A. et al. Abdominal and pelvic CT in cases of suspected abuse: can clinical and laboratory findings guide its use?. Pediatr Radiol 41, 92–98 (2011). https://doi.org/10.1007/s00247-010-1847-8
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DOI: https://doi.org/10.1007/s00247-010-1847-8