Diagnostic imaging of child abuse

Yield of skeletal surveys in children ≤ 18 months of age presenting with isolated skull fractures

OBJECTIVE

To measure the yield of a skeletal survey in children ≤ 18 months old presenting with isolated skull fractures without significant intracranial injury.

STUDY DESIGN

A retrospective chart review was conducted on all children ≤ 18 months old presenting with an isolated skull fracture not associated with a motor vehicle crash or shopping cart fall between January 1, 2004 and December 31, 2010. An institutional protocol requires a skeletal survey and social work consult on all such children. We analyzed the association of mechanism of injury, type of skull fracture, and presence of "red flags" with a positive skeletal survey using χ(2) and Fisher exact tests.

RESULTS

Of 175 eligible patients, 150 (86%) underwent a skeletal survey. Of the 9 patients (6%) who had another fracture in addition to the presenting one, only 1 child was older than 6 months. Eight patients with additional fractures had a simple skull fracture (not complex) and 7 patients with other fractures had at least 1 red flag. Regarding skull fractures, the majority of long falls (81%) resulted in a simple skull fracture.

CONCLUSION

The skeletal survey in patients with isolated skull fractures revealed additional fractures in 6% of patients. Thus, a skeletal survey may yield clinically and forensically relevant data in such patients. However, it may be possible to restrict the window for obtaining a skeletal survey to younger infants, particularly those who are premobile.

Assessing the use of follow-up skeletal surveys in children with suspected physical abuse

BACKGROUND

Child physical abuse is an important cause of morbidity and mortality in young children. The skeletal survey (SS) is considered a mandatory part of the evaluation for suspected physical abuse in young children. Literature suggests that a follow-up SS performed 10 to 21 days after the initial SS can provide important additional information, but previous studies evaluating the follow-up SS have been small and included very selective patient populations.

METHODS

A retrospective descriptive study of a consecutive sample of children who underwent an initial SS and a follow-up SS at a single children's hospital during a 7-year period. Data on demographics, clinical presentation, results, and effect of the follow-up SS on clinical diagnosis were collected.

RESULTS

Of the 1470 children who underwent an initial SS, 11% (169 of 1470 children) also underwent a follow-up SS. The mean age of the children who underwent both an initial SS and a follow-up SS was 5.8 months. Fourteen percent of the follow-up SS identified previously unrecognized fractures; all of which were healing. There were eight children in whom the information obtained from the follow-up SS resulted in a diagnosis of definite physical abuse; all eight children were younger than 12 months, and in six of these cases, the initial SS did not demonstrate any fractures.

CONCLUSION

Only a small proportion of children who undergo an initial SS also undergo a follow-up SS. The relatively high proportion of follow-up SS that demonstrated previously unrecognized fracture(s), the young age of children undergoing the follow-up SS, and the high morbidity and mortality of unrecognized/missed child physical abuse in this age group suggest that the follow-up SS should be a routine part of the evaluation of child physical abuse.

LEVEL OF EVIDENCE

III, observational study.

Variation in occult injury screening for children with suspected abuse in selected US children's hospitals

OBJECTIVE

To describe variation across selected US children's hospitals in screening for occult fractures in children <2 years old diagnosed with physical abuse and in infants <1 year old who have injuries associated with a high likelihood of physical abuse.

METHODS

We performed a retrospective study of children <2 years old with a diagnosis of physical abuse and infants <1 year old with non-motor vehicle crash-associated traumatic brain injuries or femur fractures admitted to 40 hospitals within the Pediatric Hospital Information System database from January 1, 1999, to December 31, 2009. We examined variation among the hospitals in the performance of screening for occult fractures as defined by receipt of skeletal survey or radionuclide bone scan. Marginal standardization implemented with logistic regression analysis was used to examine hospital variation after adjusting for patient demographic characteristics, injury severity, and year of admission.

RESULTS

Screening for occult fractures was performed in 83% of the 10,170 children <2 years old with a diagnosis of physical abuse, 68% of the 9942 infants who had a traumatic brain injury, and 77% of the 2975 infants who had femur fractures. After adjustment for patient characteristics, injury severity, and year of admission, hospitals varied significantly in use of screening for occult fractures in all 3 groups of children.

CONCLUSIONS

The observed variation in screening for occult fractures in young victims of physical abuse and infants who have injuries associated with a high likelihood of abuse underscores opportunities to improve the quality of care provided to this vulnerable population.

[Shaken baby syndrome: which lesions in imaging ?]

Non-accidental brain trauma (also called shaken baby syndrome) represent the main cause for morbidity and mortality in the context of child abuse. It often occur in young infants aged less than 8months. The shaking leading to brain injuries are very violent and sometimes associated with a final impact. Intracranial injuries may be isolated without skeletal trauma or bruising. In any suspicion of such a diagnosis, emergency hospitalization is indicated. Brain CT, easy to perform in emergency, is the diagnostic key. It discloses diffuse subdural hematomas in typical sites as vertex, interhemispheric space and tentorium. There is no clear background of trauma and the related story is changing over time. The 3D analysis of the skull looks for signs of recent impact as a fracture that is sometimes complex and/or a soft tissue swelling of the scalp. Intraparenchymal injuries (contusions, tearing, and overall anoxic ischemic injuries) are better analyzed with MRI. The prognosis depends on their extent. Ophtalmologic examination is systematically performed looking for retinal hemorrhages (around one third of cases) which may be very subtle. Bruising is a major diagnostic sign, but inconstantly present. A precise datation of skeletal and/or brain injuries is not possible with imaging and the only indication of use is to establish the presence of "age different lesions". This indicates repeated trauma and thereby a high risk of recurrence.

Prevalence of abusive injuries in siblings and household contacts of physically abused children

OBJECTIVE

Siblings and other children who share a home with a physically abused child are thought to be at high risk for abuse, but rates of injury in these contact children are unknown and screening of contacts is highly variable. Our objective was to determine the prevalence of abusive injuries identified by a common screening protocol among contacts of physically abused children.

METHODS

This is an observational, multicenter cross-sectional study of children evaluated for physical abuse, and their contacts, by 20 US child abuse teams who used a common screening protocol for the contacts of physically abused children with serious injuries. Contacts underwent physical examination if they were <5 years old, physical examination and skeletal survey (SS) if they were <24 months old, and physical examination, SS, and neuroimaging if they were <6 months old.

RESULTS

Protocol-indicated SS identified at least 1 abusive fracture in 16 of 134 contacts (11.9%, 95% confidence interval [CI] 7.5-18.5) <24 months of age. None of these fractures had associated findings on physical examination. No injuries were identified by neuroimaging in 19 of 25 eligible contacts (0.0%, 95% CI 0.0-13.7). Twins were at substantially increased risk of fracture relative to nontwin contacts (odds ratio 20.1, 95% CI 5.8-69.9).

CONCLUSIONS

SS should be obtained in the contacts of injured, abused children for contacts who are <24 months old, regardless of physical examination findings. Twins are at higher risk of abusive fractures relative to nontwin contacts.

Long bone fracture detection in suspected child abuse: contribution of lateral views

BACKGROUND

ACR guidelines for routine skeletal survey for child abuse recommend only AP radiographs of the long bones; however, many institutions add lateral radiographs.

OBJECTIVES

To evaluate whether adding lateral radiographs for long bones changes the frequency and confidence of fracture detection in skeletal survey radiographs for suspected abuse.

MATERIALS AND METHODS

We identified 100 children younger than 2 years of age who underwent skeletal survey for child abuse; 56 with multiple long bone fractures, 22 with a single fracture and 22 with no fractures. Four radiologists (two pediatric radiologists, one pediatric radiology fellow and one general radiologist) evaluated two randomized series (one series included only frontal, and the other series, frontal and lateral radiographs). Likert scale of 1-5 was used to score for detection of metaphyseal and diaphyseal fractures.

RESULTS

For combined readers, significantly more metaphyseal fractures (P = 0.01) were detected with the two-views series of radiographs compared with the frontal-only view; there was no significant difference for diaphyseal fractures. Confidence was also significantly higher for the two-views series. Kappa improved (from 0.32 to 0.48) when the lateral view was added only for the metaphyseal fractures.

CONCLUSION

Adding lateral radiographs resulted in increased detection and confidence levels of metaphyseal fractures.

Compendium of national guidelines for imaging of the pediatric patient

BACKGROUND

Diagnostic imaging plays an integral role in diagnosing and managing many pediatric disorders, but there is growing concern in both the medical community and the general public about the long-term health effects of ionizing radiation in children, as well as utilization of imaging evaluation. These concerns, coupled with increasing pressure to reduce national health care spending, underscore the need for an assessment of readily available guidelines, especially evidence-based guidelines, for imaging in children.

OBJECTIVE

To generate a list of national medical organization-endorsed guidelines with provisions for imaging the pediatric patient.

MATERIALS AND METHODS

Several resources, including the National Guideline Clearinghouse (NGC) and the Web sites of major medical organizations, were searched for documents that contained specific recommendations for imaging in the pediatric population.

RESULTS

A total of 155 guidelines from 40 medical organizations met inclusion criteria and are represented in our compendium.

CONCLUSIONS

The compendium generated in this study can be used to direct clinical care, inform policy development and improve education of health care personnel. Additionally, the compendium can be used to identify areas of redundancy or deficiency, which may stimulate the reassessment of existing recommendations as well as the creation of new guidelines.

Prevalence of the classic metaphyseal lesion in infants at low versus high risk for abuse

OBJECTIVE

The purpose of this article is to determine the relative likelihood of encountering a classic metaphyseal lesion in infants at low and high risk for abuse.

MATERIALS AND METHODS

This 10-year retrospective study compared the prevalence of the classic metaphyseal lesion on high-detail American College of Radiology-standardized skeletal surveys in infants at low and high risk for abuse. Low-risk infants met all of the following criteria: skull fracture without significant intracranial injury on CT, history of a fall, and no other social risk factors for abuse. High-risk infants met all of the following criteria: significant intracranial injury, retinal hemorrhages, and skeletal injuries (excluding classic metaphyseal lesions and skull fractures). Differences between the two groups were calculated using the Fisher exact test.

RESULTS

There were 42 low-risk infants (age range, 0.4-12 months; mean age, 4.4 months) and 18 high-risk infants (age range, 0.8-10.3 months; mean age, 4.6 months). At least one classic metaphyseal lesion was identified in nine infants (50%) in the high-risk category. No classic metaphyseal lesions were identified in the low-risk group. The relative prevalence of classic metaphyseal lesions in the low-risk group (0/42) versus that in the high-risk group (9/18) was statistically significant (p < 0.0001; 95% CI, 0-8% to 29-76%).

CONCLUSION

Classic metaphyseal lesions are commonly encountered in infants at high risk for abuse and are rare in infants with skull fractures associated with falls, but no other risk factors. The findings support the view that the classic metaphyseal lesion is a high-specificity indicator of infant abuse.

Child Abuse and Neglect

It is important for surgeons to be able to accurately assess and diagnose child abuse. While they are generally not the only medical professionals involved in the care of children with suspected abuse, they are highly regarded by hospital and social service staff, and their input regarding the cause of injury is unlikely to be ignored. Appropriate diagnosis of abusive injury can prevent future morbidity and mortality in these vulnerable patients, and can also reduce the trauma to families from false accusations of abuse. A sensitive and open-ended history, thorough physical examination, appropriate diagnostic workup with consideration of child abuse as an underlying cause, appropriate documentation of findings, and determination of safety for discharge can greatly improve an abused child's current and future health and safety.

Retrospective review to determine the utility of follow-up skeletal surveys in child abuse evaluations when the initial skeletal survey is normal

OBJECTIVE

The AAP recommends that a follow-up skeletal survey be obtained for all children < 24 months of age who are strongly suspected to be victims of abuse. The objective of the current study was to evaluate the utility of a follow-up skeletal survey in suspected child physical abuse evaluations when the initial skeletal survey is normal.

METHODS

A retrospective review of radiology records from September 1, 1998 - January 31, 2007 was conducted. Suspected victims of child abuse who were < 24 months of age and received initial and follow-up skeletal surveys within 56 days were enrolled in the study. Children with a negative initial skeletal survey were included for further analysis.

RESULTS

Forty-seven children had a negative initial skeletal survey and were included for analysis. The mean age was 6.9 months (SD 5.7); the mean number of days between skeletal surveys was 18.7 (SD 10.1)Four children (8.5%) had signs of healing bone trauma on a follow-up skeletal survey. Three of these children (75%) had healing rib fractures and one child had a healing proximal humerus fracture. The findings on the follow-up skeletal survey yielded forensically important information in all 4 cases and strengthened the diagnosis of non-accidental trauma.

CONCLUSION

8.5 percent of children with negative initial skeletal surveys had forensically important findings on follow-up skeletal survey that increased the certainty of the diagnosis of non-accidental trauma. A follow-up skeletal survey can be useful even when the initial skeletal survey is negative.

ACR Appropriateness Criteria(®) on suspected physical abuse-child

The appropriate imaging for pediatric patients being evaluated for suspected physical abuse depends on the age of the child, the presence of neurologic signs and symptoms, evidence of thoracic or abdominopelvic injuries, and whether the injuries are discrepant with the clinical history. The clinical presentations reviewed consider these factors and provide evidence-based consensus recommendations by the ACR Appropriateness Criteria(®) Expert Panel on Pediatric Imaging.

Bedside ultrasound in the diagnosis of skull fractures in the pediatric emergency department

Bedside ultrasound has become a diagnostic tool that is commonly used in the emergency department. In trained hands, it can be used to diagnose multiple pathologies. In this case series, we describe the utility of ultrasound in diagnosing skull fractures in pediatric patients with scalp hematomas.

Imaging of nonaccidental injury and the mimics: issues and controversies in the era of evidence-based medicine

Because of the controversy involving the determination of child abuse, or nonaccidental injury (NAI), radiologists must be familiar with the issues, literature, and principles of evidence-based medicine to understand the role of imaging. Children with suspected NAI must receive protective evaluation along with a timely and complete clinical and imaging work-up. Imaging findings cannot stand alone and must be correlated with clinical findings, laboratory testing, and pathologic and forensic examinations. Only the child protection investigation may provide the basis for inflicted injury in the context of supportive clinical, imaging, biomechanical, or pathology findings.

Use of skeletal surveys to evaluate for physical abuse: analysis of 703 consecutive skeletal surveys

OBJECTIVES

The goals were to assess the use of the skeletal survey (SS) to evaluate for physical abuse in a large consecutive sample, to identify characteristics of children most likely to have unsuspected fractures, and to determine how often SS results influenced directly the decision to make a diagnosis of abuse.

METHODS

A retrospective, descriptive study of a consecutive sample of children who underwent an SS at a single children's hospital over 4 years was performed. Data on demographic characteristics, clinical presentation, SS results, and effects of SS results on clinical diagnoses were collected. A positive SS result was defined as a SS which identified a previously unsuspected fracture(s).

RESULTS

Of the 703 SSs, 10.8% yielded positive results. Children <6 months of age, children with an apparent life-threatening event or seizure, and children with suspected abusive head trauma had the highest rates of positive SS results. Of children with positive SS results, 79% had ≥1 healing fracture.

CONCLUSIONS

This is the largest study to date to describe the use of the SS. Almost 11% of SS results were positive. The SS results influenced directly the decision to make a diagnosis of abuse for 50% of children with positive SS results. These data, combined with the high morbidity rates for missed abuse and the large proportion of children with healing fractures detected through SS, suggest that broader use of SS, particularly for high-risk populations, may be warranted.

Abdominal imaging in child abuse

INTRODUCTION

Abdominal injuries in abused children are less common than musculoskeletal and craniocerebral injuries; however they carry high mortality and morbidity rates. In every case of trauma, regardless of aetiology, radiologists are responsible for the documentation and evaluation of injuries.

INJURIES

Any abdominal injury pattern maybe observed following physical abuse and none is specific for abuse. However, a high index of suspicion should be maintained for every case of pancreatic, hollow viscous and other solid organ injuries, especially when there is delay in seeking help, a history of trauma to the child or siblings, young age, undernourishment, ecchymosis in non-ambulatory children or a non-plausible explanation for the injuries based on the provided history and the psychomotor condition of the child.

IMAGING MODALITIES

CT with intravenous contrast material is the imaging modality of choice in every suspected inflicted abdominal injury. US could be the first imaging test for abused children with a low probability of abdominal injury and for follow-up. Upper gastrointestinal series could reveal acute or resolving mural haematomas in children with equivocal CT or US findings.

CONCLUSION

Child abuse should be considered in the differential diagnosis of acute abdominal symptoms in young children.

Advanced neuroimaging in children with nonaccidental trauma

Physical abuse associated with nonaccidental trauma (NAT) affects approximately 144,000 children per year in the USA and, frequently, these injuries affect the developing brain. Most infants with suspected NAT are initially evaluated by skull X-rays and computed tomography to determine whether fractures are present, the severity of the acute injury and the need for urgent neurosurgical intervention. Increasingly, magnetic resonance imaging (MRI) is conducted as it provides additional diagnostic and prognostic information about the extent and nature of the injury. In this review, we examine 4 MRI techniques as they apply to children who present acutely after NAT. Susceptibility-weighted imaging is a 3-D high-resolution MRI technique that is more sensitive than conventional imaging in detecting hemorrhagic lesions that are often associated with diffuse axonal injury (DAI). Magnetic resonance spectroscopy acquires metabolite information reflecting neuronal integrity and function from multiple brain regions and provides a sensitive, noninvasive assessment of neurochemical alterations that offers early prognostic information regarding outcome. Diffusion-weighted imaging (DWI) is based on differences in the diffusion of water molecules within the brain and has been shown to be very sensitive in the early detection of ischemic injury. It is now being used to study the direct effects of traumatic injury as well as those due to secondary ischemia. Diffusion tensor imaging is a form of DWI and allows better evaluation of white matter fiber tracts by taking advantage of the intrinsic directionality (anisotropy) of water diffusion in the human brain. It has been shown to be useful in identifying white matter abnormalities after DAI when conventional imaging appears normal. Although these imaging methods have been studied primarily in adults and children with accidental traumatic brain injury, it is clear that they have the potential to provide additional value in the imaging and clinical evaluation of children with NAT.

Whole-body MRI in suspected infant abuse

OBJECTIVE

The purpose of our study was to examine the utility of whole-body MRI (WB-MRI) in the detection of skeletal and soft-tissue injuries in suspected infant abuse.

MATERIALS AND METHODS

Twenty-one infants (0-12 months) underwent WB-MRI for evaluation of suspected child abuse. WB-MRI at 1.5 T was performed using coronal and sagittal STIR sequences within 5 days of initial skeletal survey. Follow-up skeletal survey was performed in 16 cases. The "truth" was determined by integrating the initial and follow-up skeletal surveys, where available, into a summary of skeletal injuries (summary skeletal survey). Statistics included analysis of counts and proportions, concordance rate, sensitivity, and specificity.

RESULTS

Summary skeletal survey and WB-MRI identified 167 fractures or areas of skeletal signal abnormality: 46 (27.5%) by both techniques, 68 (40.7%) by summary skeletal survey only, and 53 (31.7%) by WB-MRI only. WB-MRI had high specificity (95%) but low sensitivity (40%) for identifying fractures or signal abnormalities compared with summary skeletal survey. Thirty-seven classic metaphyseal lesions or metaphyseal signal abnormalities were identified: 11 (29.7%) by both techniques, 24 (64.8%) by summary skeletal survey only, and two (5.4%) by WB-MRI only. WB-MRI had very low sensitivity (31%) for identifying signal abnormality where classic metaphyseal lesions were seen with skeletal survey. WB-MRI had low sensitivity (57%) for identifying signal abnormality in areas where rib fractures were seen on skeletal survey. WB-MRI identified soft-tissue injuries such as muscle edema and joint effusions that, in some cases, led to identifying additional fractures.

CONCLUSION

WB-MRI is insensitive in the detection of classic metaphyseal lesions and rib fractures, high specificity indicators of infant abuse. WB-MRI cannot replace the skeletal survey but may complement it by identifying soft-tissue abnormalities.

Abusive head trauma: judicial admissions highlight violent and repetitive shaking

OBJECTIVE

Confessions are uncommon in abusive head trauma (AHT) cases, and there is debate over whether shaking alone can cause the injuries characteristic of AHT. The objective of this article is to correlate legal statements by perpetrators with medical documentation to offer insights into the mechanism of injury.

METHODS

In this retrospective observational study we examined forensic evidence from 112 cases referred for AHT over a 7-year period. We compared 29 cases in which a perpetrator confessed to violence toward the child with 83 cases in which there was no confession. Inclusion criteria were subdural hematoma (SDH) on computed tomography and perpetrator admission of a causal relationship between the violence inflicted and the child's symptoms. Groups were compared by using Student's t test for age and Fisher's exact test for gender, death, fractures, retinal hemorrhages, ecchymoses, symptoms, and SDH patterns. All medical records from birth to diagnosis, imaging studies, and written investigation reports were reviewed.

RESULTS

All confessions came from forensic investigations. There was no statistically significant difference between the 2 groups for any of the variables studied. Shaking was described as extremely violent (100%) and was repeated (55%) from 2 to 30 times (mean: 10) because it stopped the infant's crying (62.5%). Impact was uncommon (24%). No correlation was found between repeated shaking and SDH densities.

CONCLUSIONS

This unique forensic case series confirms the violence of shaking. The high frequency of habitual AHT is a strong argument for reporting suspected cases to judicial authorities and helps to explain the difficulty in dating the injuries.

Disparities in the evaluation and diagnosis of abuse among infants with traumatic brain injury

OBJECTIVE

To evaluate in a national database the association of race and socioeconomic status with radiographic evaluation and subsequent diagnosis of child abuse after traumatic brain injury (TBI) in infants.

METHODS

We conducted a retrospective study of infants with non-motor vehicle-associated TBI who were admitted to 39 pediatric hospitals from January 2004 to June 2008. Logistic regression controlling for age, type, and severity of TBI and the presence of other injuries was performed to examine the association of race and socioeconomic status with the principal outcomes of radiographic evaluation for suspected abuse and diagnosis of abuse. Regression coefficients were transformed to probabilities.

RESULTS

After adjustment for type and severity of TBI, age, and other injuries, publicly insured/uninsured infants were more likely to have had skeletal surveys performed than were privately insured infants (81% vs 59%). The difference in skeletal survey performance for infants with public or no insurance versus private insurance was greater among white (82% vs 53%) infants than among black (85% vs 75%) or Hispanic (72% vs 55%) infants (P=.022). Although skeletal surveys were performed in a smaller proportion of white than black or Hispanic infants, the adjusted probability for diagnosis of abuse among infants evaluated with a skeletal survey was higher among white infants (61%) than among black (51%) or Hispanic (53%) infants (P=.009).

CONCLUSIONS

National data suggest continued biases in the evaluation for abusive head trauma. The conflicting observations of fewer skeletal surveys among white infants and higher rates of diagnosis among those screened elicit concern for overevaluation in some infants (black or publicly insured/uninsured) or underevaluation in others (white or privately insured).

How to explore and report children with suspected non-accidental trauma

Child abuse is a controversial problem of special concern. Recent reports have focused on the broad variability of reporting to child protection services. Radiologists play a key role in the early diagnosis and imaging of suspected inflicted injury. Imaging must be performed and then interpreted with rigour.The aims of this review are: To review the recent recommended guidelines for imaging in cases of suspicion of abuse. These include a highly detailed complete skeletal survey with centered views, whilst brain CT and/or MRI are mandatory in children younger than 2 years. The use of abdominal imaging is debatable if the child has no symptoms. All siblings younger than 2 years should be assessed in the same way while the diagnosis of abuse is investigated. Body MRI is an interesting modality that remains a "work-in-progress". To highlight that dating of both brain and skeletal injuries is imprecise. The main point is, however, to determine if the pattern is of "age-different" lesions. This not only provides a strong argument for the diagnosis of abuse, but also indicates repetitive violence with a high risk for further injury and death. To remember that the medical perspective is to protect the child. Thus, radiologists must communicate clearly the suspicion of abuse and the degree of certainty to clinicians to aid reporting or hospitalization.

Skeletal trauma in child abuse: detection with 18F-NaF PET

PURPOSE

To evaluate the sensitivity of fluorine 18-labeled sodium fluoride ((18)F-NaF) positron emission tomography (PET) for assessment of skeletal trauma in pediatric patients suspected of having been abused and to compare the diagnostic performance of this examination with that of high-detail skeletal survey.

MATERIALS AND METHODS

The institutional review board approved this retrospective study and determined that it was in accordance with regulations of HIPAA privacy rule 45, Code of Federal Regulations parts 160 and 164, and that the criteria for waived patient authorization were met. The baseline skeletal survey and PET images obtained in 22 patients younger than 2 years between September 2007 and January 2009 were reviewed. Fourteen patients also underwent follow-up skeletal survey. The PET images were interpreted by two pediatric nuclear medicine physicians. The initially obtained skeletal survey images were interpreted blindly by a pediatric radiologist. A second pediatric radiologist interpreted the follow-up skeletal survey images in conjunction with the baseline survey images and rendered a final interpretation for the 14 patients in whom both baseline and follow-up skeletal survey data were available, which served as the reference standard.

RESULTS

A total of 156 fractures were detected at baseline skeletal survey, and 200 fractures were detected at PET. Compared with the reference standard (findings in the 14 patients who underwent baseline and follow-up skeletal survey), PET had sensitivities of 85% for the detection of all fractures, 92% for the detection of thoracic fractures (ribs, sternum, clavicle, and scapula), 93% for the detection of posterior rib fractures, and 67% for the detection of classic metaphyseal lesions (CMLs), defined as a series of microfractures across the metaphysis. Compared with the reference standard, baseline skeletal survey had sensitivities of 72% for the detection of all fractures, 68% for the detection of thoracic fractures, 73% for the detection of posterior rib fractures, and 80% for the detection of CMLs.

CONCLUSION

(18)F-NaF PET had greater sensitivity in the overall detection of fractures related to child abuse than did baseline skeletal survey. (18)F-NaF PET was superior in the detection of rib fractures in particular. Thus, (18)F-NaF PET is an attractive choice for evaluation of suspected child abuse, an application in which high sensitivity is desirable. Because of the lower sensitivity of PET in the detection of CMLs, a characteristic fracture in child abuse, initial radiographic evaluation remains necessary.

Child abuse and neglect: a worldwide concern

PURPOSE OF REVIEW

As knowledge about child abuse and neglect increases worldwide, so does the literature on abuse and neglect. The authors explore many studies published this year, with attention to the advances in understanding which are guiding prevention efforts as well as diagnosis and treatment of abuse and neglect.

RECENT FINDINGS

The evidence base for many forms of child abuse continues to grow. Controversy around the diagnosis of child abuse still continues, with current debate focused on the diagnosis of abusive head injury and whether children with vitamin D deficiency are misdiagnosed with abusive fractures. As clinicians begin to understand the factors which may increase child vulnerability to abuse, more sophisticated and focused prevention efforts are being implemented, and researchers are evaluating these efforts with an eye to whether or not they really contribute to prevention.

SUMMARY

The short-term and long-term impact of child maltreatment is significant not only for individuals but for families and communities in which abuse is taking place. General pediatricians have an important role to play with families and in the community as advocates for the protection of children. However, it is clear that specialists in child abuse should also play a role in order for diagnosis and management of abuse to adhere to a high standard of care. This has been validated this year by the creation of Child Abuse Pediatrics as a board certified specialty in the United States. As knowledge about abuse and neglect grows, clinicians are focusing on prevention as well as diagnosis and treatment.

Incidence of fractures among children with burns with concern regarding abuse

OBJECTIVE

Consensus recommendations state that a radiographic skeletal survey is mandatory for all children <2 years of age with concern for physical abuse. It has been suggested that patients with burns may represent a special subgroup at lower risk for occult fractures, compared with other abused children. Our objective was to determine the prevalence of fractures in children referred for subspecialty abuse evaluations because of burns.

METHODS

We performed retrospective analyses of data collected as part of the Using Liver Transaminases to Recognize Abuse (ULTRA) research network. Data were collected for all children <5 years of age who were referred to 19 child protection teams for subspecialty child abuse evaluations over 1 year (N = 1676). We compared the rate of fractures in children presenting with burns with that in other children evaluated for abuse.

RESULTS

Of 97 children <24 months of age with burns, 18 (18.6%) were also found to have fractures. Among all 1203 children <24 months of age, 649 (53.9%) had fractures. Eleven children had multiple fractures, and 12 children had fractures with radiographic evidence of healing. Two children were noted to have classic metaphyseal fractures.

CONCLUSION

The rate of fractures in children who present with burns and concerns regarding physical abuse is sufficient to support the recommendation for routinely performing skeletal surveys for children <2 years of age.