Urine leaks in children sustaining blunt renal trauma.

BACKGROUND: Few consensus statements exist to guide the timely diagnosis and management of urine leaks in children sustaining blunt renal trauma (BRT). The aims of this study were to characterize kidney injuries among children who sustain BRT, evaluate risk factors for urine leaks, and describe the negative impact of urinoma on patient outcomes and resource consumption. METHODS: A retrospective review was performed of 347 patients, younger than 19 years, who presented with BRT to a single American College of Surgeons-verified Level I Pediatric Trauma Center between 2005 and 2020. Frequency of and risk factors for urine leak after BRT were evaluated, and impact on patient outcomes and resource utilization were analyzed. RESULTS: In total, 44 (12.7%) patients developed urine leaks, which exclusively presented among injury Grade 3 (n = 5; 11.4%), Grade 4 (n = 27; 61.4%), and Grade 5 (n = 12; 27.3%). A minority of urine leaks (n = 20; 45.5%) were discovered on presenting CT scan but all within 3 days. Kidney-specific operative procedures (nephrectomy, cystoscopy with J/ureteral stent, percutaneous nephrostomy) were more common among urine leak patients (n = 17; 38.6%) compared with patients without urine leaks (n = 3; 1.0%; p = 0.001). Patients with urine leak had more frequent febrile episodes during hospital stay (n = 24; 54.5%; p = 0.001) and showed increased overall 90-day readmission rates (n = 14; 33.3%; p < 0.001). Independent risk factors that associated with urine leak were higher grade (odds ratio [OR], 7.9; 95% confidence interval [CI], 2.6-24.3; p < 0.001), upper-lateral quadrant injuries (OR, 2.9; 95% CI, 1.2-7.1; p = 0.02), and isolated BRT (OR, 2.6; 95% CI, 1.0-6.5; p = 0.04). CONCLUSION: In a large cohort of children sustaining BRT, urine leaks result in considerable morbidity, including more febrile episodes, greater 90-day readmission rates, and increased operative or image-guided procedures. This study is the first to examine the relationship between kidney quadrant injury and urine leaks. Higher grade (Grade 4-5) injury, upper lateral quadrant location, and isolated BRT were independently predictive of urine leaks. LEVEL OF EVIDENCE: Therapeutic/Care Management; Level III.

Commentary regarding sedated ultrasound guided saline reduction (SUR) of ileocolic intussusception; 20 year experience.

This is a commentary on the manuscript by Sacks R, Anconina R, Farkas E, et al, titled "Sedated Ultrasound Guided Saline Reduction (SUR) of Ileocolic Intussusception: 20 Year Experience".

O-RADS US Risk Stratification and Management System: A Consensus Guideline from the ACR Ovarian-Adnexal Reporting and Data System Committee.

The Ovarian-Adnexal Reporting and Data System (O-RADS) US risk stratification and management system is designed to provide consistent interpretations, to decrease or eliminate ambiguity in US reports resulting in a higher probability of accuracy in assigning risk of malignancy to ovarian and other adnexal masses, and to provide a management recommendation for each risk category. It was developed by an international multidisciplinary committee sponsored by the American College of Radiology and applies the standardized reporting tool for US based on the 2018 published lexicon of the O-RADS US working group. For risk stratification, the O-RADS US system recommends six categories (O-RADS 0-5), incorporating the range of normal to high risk of malignancy. This unique system represents a collaboration between the pattern-based approach commonly used in North America and the widely used, European-based, algorithmic-style International Ovarian Tumor Analysis (IOTA) Assessment of Different Neoplasias in the Adnexa model system, a risk prediction model that has undergone successful prospective and external validation. The pattern approach relies on a subgroup of the most predictive descriptors in the lexicon based on a retrospective review of evidence prospectively obtained in the IOTA phase 1-3 prospective studies and other supporting studies that assist in differentiating management schemes in a variety of almost certainly benign lesions. With O-RADS US working group consensus, guidelines for management in the different risk categories are proposed. Both systems have been stratified to reach the same risk categories and management strategies regardless of which is initially used. At this time, O-RADS US is the only lexicon and classification system that encompasses all risk categories with their associated management schemes.

Ovarian-Adnexal Reporting Lexicon for Ultrasound: A White Paper of the ACR Ovarian-Adnexal Reporting and Data System Committee.

Ultrasound is the most commonly used imaging technique for the evaluation of ovarian and other adnexal lesions. The interpretation of sonographic findings is variable because of inconsistency in descriptor terminology used among reporting clinicians. The use of vague terms that are inconsistently applied can lead to significant differences in interpretation and subsequent management strategies. A committee was formed under the direction of the ACR initially to create a standardized lexicon for ovarian lesions with the goal of improving the quality and communication of imaging reports between ultrasound examiners and referring clinicians. The ultimate objective will be to apply the lexicon to a risk stratification classification for consistent follow-up and management in clinical practice. This white paper describes the consensus process in the creation of a standardized lexicon for ovarian and adnexal lesions and the resultant lexicon.

Prospective study of the incidence and predictors of thrombus in children undergoing palliative surgery for single ventricle physiology.

PURPOSE: To determine the incidence and clinical and biomarker predictors of perioperative thrombosis in children with single ventricle physiology undergoing staged palliation. METHODS: Nineteen patients were enrolled and 16 completed the study. Serial ultrasounds of the central venous system were performed to evaluate for thrombus. Plasma antithrombin III, thrombin-antithrombin complex, protein C, protein S, tissue factor pathway inhibitor, plasminogen activator inhibitor-1, tissue plasminogen activator antigen, D-dimer, soluble CD40 ligand, and urinary thromboxane were measured serially before and after surgery. Cardiopulmonary bypass time, aortic cross clamp time, blood product administration, inotrope score, chest tube output, cardiac function by echocardiography, intensive care unit and hospital lengths of stay, and central venous catheter days were recorded. RESULTS: The incidence of perioperative thrombus was 31%. Patients who developed a thrombus had poorer preoperative ventricular function (p = 0.03) and longer cardiopulmonary bypass times (p = 0.03) than those who did not develop a thrombus. Preoperative plasma antithrombin III was lower (p = 0.01) and tissue plasminogen activator antigen concentrations were higher (p = 0.02) in patients with a thrombus compared with patients without a thrombus. When measured over time, antithrombin III remained lower (p = 0.002) and tissue plasminogen activator antigen higher (p = 0.005) in those who developed a thrombus compared with those who did not. There were no other statistically significant differences in biomarkers of coagulation between patients with and without thrombosis. CONCLUSION: One-third of patients undergoing palliative surgery for single ventricle physiology develop thrombosis. Decreased ventricular function, low antithrombin III, and increased tissue plasminogen activator may predict those most suitable for randomized clinical trials of anticoagulation.

Does subspecialty referral affect the pretest probability for an abnormal finding on knee MRI of pediatric patients?

OBJECTIVE: Pediatricians and orthopedists comprise the largest referral basis for knee MR examinations at our institution. In an era of cost optimization, the purpose of this study was to compare differences in pretest probability for an abnormal finding on knee MRI based on referral subspecialty. MATERIALS AND METHODS: A retrospective review of 501 consecutive knee MR examinations of pediatric patients (56% male; mean age, 14 years; age range, 1-18 years) referred by nononcology orthopedic surgeons and 93 consecutive knee MR examinations of patients (47% male; mean age, 14 years; age range, 2-18 years) referred by general pediatricians from 2005 to 2009 were reviewed. Two patient groups based on the MR report were established: patients with entirely normal MRI findings and those who had a clinically significant MRI finding or findings. The latter group included children with any internal derangement, a discoid meniscus, a neoplasm, or evidence of infection or inflammation. RESULTS: The incidence of an entirely normal knee MRI from pediatrician referral and orthopedic referral was 24% (22/93) and 17% (87/501) (p = 0.15), respectively. The respective incidence of selected specific injuries identified from pediatrician and orthopedic referral included any internal derangement, 39.8% and 48.3% (p = 0.13); neoplasm, 2.2% and 1.4% (p = 0.64); and inflammation, 6.5% and 2.0% (p = 0.03). CONCLUSION: Despite differences in subspecialty training, we found no significant differences in the proportion of normal knee MRI examinations and no statistical difference in the proportion of patients with internal derangement. Further investigation is necessary to determine whether these findings translate into overall cost-savings or differences in patient outcome.

Image Gently: progress and challenges in CT education and advocacy.

Significant progress has been made in radiation protection for children during the last 10 years. This includes increased awareness of the need for radiation protection for pediatric patients with international partnerships through the Alliance for Radiation Safety in Pediatric Imaging. This paper identifies five areas of significant progress in radiation safety for children: the growth of the Alliance; the development of an adult radiation protection campaign Image Wisely™; increased collaboration with government agencies, societies and the vendor community; the development of national guidelines in pediatric nuclear medicine, and the development of a size-based patient dose correction factor by the American Association of Physicists in Medicine, Task Group 204. However, many challenges remain. These include the need for continued education and change of practice at adult-focused hospitals where many pediatric CT exams are performed; the need for increased emphasis on appropriateness of pediatric imaging and outcomes research to validate the performance of CT studies, and the advancement of the work of the first pediatric national dose registry to determine the "state of the practice" with the final goal of establishing ranges of optimal CT technique for specific scan indications when imaging children with CT.

Approaches to promotion and implementation of action on Radiation Protection for children.

The Radiation Protection in Medicine conference, reviewed in this journal supplement, outlined nine strategies to promote radiation protection for patients. The Alliance for Radiation Safety in Pediatric Imaging has focused its work on three of those areas: creating awareness of the need and opportunities for radiation protection for children; developing open-source educational materials for medical professionals and parents on this critical topic for improved patient safety and communication; and lastly, advocating on behalf of children with industry, government and regulatory bodies to improve equipment design and safety features, standardisation of nomenclature and displays of dose reports across vendor platforms that reflect the special considerations of children.

Pause and pulse: ten steps that help manage radiation dose during pediatric fluoroscopy.

OBJECTIVE: The Image Gently Campaign of The Alliance for Radiation Safety in Pediatric Imaging seeks to increase awareness of opportunities to lower radiation dose in the imaging of children. Pause and Pulse is the most recent phase of the campaign, addressing methods of dose optimization in pediatric fluoroscopy. CONCLUSION: This article discusses 10 steps that can be taken for fluoroscopic dose optimization in pediatric diagnostic fluoroscopy.

Impact of pelvic CT on staging, surveillance, and survival of pediatric patients with Wilms tumor and hepatoblastoma.

OBJECTIVE: Abdominopelvic CT is often performed in children with Wilms tumor or hepatoblastoma. However, the reported incidence of recurrent disease involving the pelvis is low. This study explores the impact of abdominopelvic CT on children with Wilms tumor or hepatoblastoma. MATERIALS AND METHODS: A text word database search of our radiology information system for the terms "Wilms" and "hepatoblastoma" was performed for the time interval between 1999 and 2009. The study inclusion criterion was performance of abdominopelvic CT. Tumor stage and metastases at presentation, follow-up, and impact on patient care were extracted from the medical records. RESULTS: There were 224 diagnostic and surveillance abdominopelvic CT studies (mean per patient, 6.8; range, 2-20). Among Wilms tumor (n = 17) and hepatoblastoma (n = 16) patients, at presentation 11 (33%) had pelvic extension of the tumor and three (9%) had pulmonary metastases. On follow-up, three (9%) additional patients developed metastatic disease or local recurrence; however, no patient was found to have pelvic metastases or recurrence. One patient with metastatic disease at presentation died. CONCLUSION: In our study population, abdominopelvic CT did not detect pelvic metastases to affect subsequent treatment. Given the low rate of pelvic involvement at relapse in children with Wilms tumor and hepatoblastoma, frequent abdominopelvic CT may not be necessary. Replacing these examinations with abdomen-only CT should be considered to decrease radiation burden to this population.

Impact of abdominopelvic CT on Ewing sarcoma management.

RATIONALE AND OBJECTIVES: Abdominopelvic computed tomography (APCT) is often performed in patients with skeletal Ewing sarcoma family of tumors during initial staging and for subsequent clinical indications, such as metastasis surveillance; however, its clinical impact is unknown. The purpose of this study was to evaluate whether these computed tomographic examinations alter oncologic management and therefore patient outcomes. MATERIALS AND METHODS: One hundred eight consecutive patients with skeletal Ewing sarcoma family of tumors seen from 1985 to 2008 were retrospectively reviewed to identify imaging workup, pathology, primary site, evidence of metastatic disease, and patient outcomes. Data were analyzed using Wilcoxon's rank sum tests. RESULTS: Sixty-five of the 108 patients (60%) underwent 342 abdominopelvic computed tomographic examinations during a mean follow-up period of 8.9 years. During this time period, only one of the 65 patients (1.5%) who underwent APCT was discovered to have abdominal metastatic disease. There was no significant difference in the incidence of metastatic disease to the skeleton or chest between the groups without and with APCT (P = .10). There were 26 pelvic and lumbosacral primaries (24%) and 82 limb primaries (76%). Subgroup analysis performed on the 82 patients with limb primaries without (n = 36) and with (n = 46) APCT showed no significant differences in metastatic incidence to the skeleton or chest (P = .14). CONCLUSIONS: This study indicates that APCT, associated with increased radiation exposure and health expenditure, has a limited role in initial staging and follow-up in patients with skeletal Ewing sarcoma, particularly in patients with limb primaries.

Image Gently: providing practical educational tools and advocacy to accelerate radiation protection for children worldwide.

The Alliance for Radiation Safety in Pediatric Imaging is an organization of over 45 international professional societies and agencies with the goal of promoting radiation safety for children. The Alliance, through the Image Gently campaign, uses social marketing techniques and critical partnerships with vendors, government agencies, and not-for-profit organizations, to advocate best practices in radiation use and safety. Advocacies include improving education regarding radiation risk to patients from medical imaging for radiologists, technologists, and referring physicians; promoting standardization of dose measurements and display across vendor equipment; and improving medical literacy for parents.

Buckle fractures in children: Is urgent treatment necessary?

PURPOSE: To determine whether the clinical outcome of buckle fractures in children differs between those treated acutely on the same day of trauma and those treated subacutely, and whether a change in practice patterns based on these data would result in cost savings. METHODS: In this retrospective cohort study-approved by the institutional review board-we reviewed the cases of 341 consecutive patients younger than 18 years of age seen by the pediatric orthopedic clinic for treatment of isolated extremity buckle fractures between July 1, 2004 and August 31, 2007. Time from injury to treatment was used to divide patients into 2 groups: acute (1 day or less; n=155) and subacute treatment (more than 1 day; n=186). Clinical outcome at final orthopedic follow-up was recorded for each patient. We defined adverse outcome as fractures requiring manipulation, clinically apparent deformity, or functional impairment. Charge analysis compared differences in management costs for patients with buckle fractures presenting initially to the emergency department (ED) and those seen solely in the orthopedic clinic. RESULTS: No adverse outcomes were identified in either acute or subacute treatment groups. Total clinical visits did not vary (acute, 3.2 vs subacute, 3.1; P=.051). Presence of mild angulation of fractures on radiographs did not differ significantly between acute and subacute management groups at initial presentation (6.5% vs 8.6%; P=.541) or at final follow-up (12.2% vs 12.4%; P=1.0). A cost savings of approximately $3000 could have been realized for each patient referred to the ED who might otherwise have been seen subacutely in the orthopedic clinic. CONCLUSIONS: No adverse clinical outcomes resulted from subacute treatment of stable buckle fractures. Cost and time savings may be realized with subacute management of buckle fractures without affecting clinical outcome.

Management of occult fractures in the skeletally immature patient: cost analysis of implementing a limited trauma magnetic resonance imaging protocol.

STUDY OBJECTIVE: Fractures in children may not be visible in the result of initial radiography, and undertreatment and overtreatment of such fractures routinely occur. The purpose of this study was to evaluate the potential cost of implementing limited magnetic resonance imaging (MRI) at initial encounter, when radiographs are unrevealing. METHODS: This was a retrospective review of 204 emergency department pediatric patients presenting between January 1, 2005 and February 28, 2006 with appendicular trauma, with initially negative radiographic result and follow-up. Emergency department treatment categorization of (1) no treatment, (2) ACE wrap, (3) brace, (4) splint, or (5) casting was evaluated. Final determination of presence or absence of fracture was based on follow-up. Patients with fractures were considered undertreated when they received categories 1 to 3 care; patients without fractures were considered overtreated when they received categories 4 and 5 care. The percentage of patients undertreated or overtreated and direct and total costs were determined and analyzed in conjunction with the cost of a limited MRI at initial encounter. Total costs include direct and indirect costs (lost wages for each day off work for the parent). Cost estimates assume patients determined to be without fractures at follow-up will not return for follow-up clinical care or obtain additional imaging after MRI at initial encounter. RESULTS: Twenty-eight (13.7%) of the 204 patients had fractures at follow-up. Fifty one percent of patients without fractures were overtreated; 29% with fractures were undertreated. Mean direct cost for all patients and cost estimation with limited MRI protocol were $843.81 and $891.79, respectively (P = 0.365). However, mean total cost for all patients and cost estimation with limited MRI protocol was $1059.49 and $929.10, respectively (P = 0.02). CONCLUSIONS: Based on clinical grounds and initially negative radiographic results, slightly more than half of patients without fractures can be overtreated, and nearly one third of patients with fractures can be undertreated. Instituting a protocol that includes limited trauma MRI lowers the total cost of care without increasing direct cost, and appropriate care may be instituted at the outset.

Suspected appendicitis in children: diagnostic importance of normal abdominopelvic CT findings with nonvisualized appendix.

PURPOSE: To determine whether lack of visualization of the appendix on otherwise normal abdominopelvic computed tomographic (CT) images can help exclude appendicitis in the pediatric population. MATERIALS AND METHODS: The study was institutional review board approved and HIPAA compliant. One thousand one hundred thirty-nine children suspected of having appendicitis were referred for CT examination between July 2002 and December 2006. Exclusion criteria included CT diagnosis of appendicitis or other cause of symptoms and lack of clinical follow-up. Consensus review was performed by two pediatric radiologists to determine normal examinations, leaving a final study group (nonvisualized appendix) of 156 patients (mean age, 9.6 years; boys, 7.2 years; girls, 10.2 years) and a control group (visualized appendix) of 421 patients (mean age, 11.0 years; boys, 9.8 years; girls, 11.2 years). In the control group, there were 168 subjects with a partially visualized (PV) appendix and 253 with a fully visualized (FV) appendix. Pericecal fat was graded according to published criteria. Diagnosis was confirmed at surgery or clinical follow-up. Negative predictive values were calculated with 95% confidence intervals (CIs). RESULTS: There were three false-negative findings (study group, two; control group, one [FV]). The negative predictive value of a normal CT examination in pediatric patients with a nonvisualized appendix was 98.7% (95% CI: 95.5%, 99.8%); that with a visualized appendix, 99.8% (95% CI: 98.7%, 99.99%); that with a PV appendix, 100% (95% CI: 97.8%, 100%); and that with a FV appendix, 99.6% (95% CI: 97.8%, 99.99%). CONCLUSION: Pediatric abdominopelvic CT images with nonvisualized appendix have a high negative predictive value, without significant difference from cases with a PV or even FV appendix. The false-negative rate was similar to those reported in two adult series.