Brain Atlas Guided Attention U-Net for White Matter Hyperintensity Segmentation.

White Matter Hyperintensities (WMH) are the most common manifestation of cerebral small vessel disease (cSVD) on the brain MRI. Accurate WMH segmentation algorithms are important to determine cSVD burden and its clinical con-sequences. Most of existing WMH segmentation algorithms require both fluid attenuated inversion recovery (FLAIR) images and T1-weighted images as inputs. However, T1-weighted images are typically not part of standard clinical scans which are acquired for patients with acute stroke. In this paper, we propose a novel brain atlas guided attention U-Net (BAGAU-Net) that leverages only FLAIR images with a spatially-registered white matter (WM) brain atlas to yield competitive WMH segmentation performance. Specifically, we designed a dual-path segmentation model with two novel connecting mechanisms, namely multi-input attention module (MAM) and attention fusion module (AFM) to fuse the information from two paths for accurate results. Experiments on two publicly available datasets show the effectiveness of the proposed BAGAU-Net. With only FLAIR images and WM brain atlas, BAGAU-Net outperforms the state-of-the-art method with T1-weighted images, paving the way for effective development of WMH segmentation. Availability: https://github.com/Ericzhang1/BAGAU-Net.

Fetus-in-Fetu: A Case of Ovarian Involvement and Residual Regrowth in a Teenager.

BACKGROUND: Fetus-in-fetu (FIF) is a rare, congenital soft tissue mass typically occurring retroperitoneally in neonates younger than 18 months. We present a 13-year-old girl with an ovarian FIF occurrence and subsequent residual regrowth after resection. CASE: A 13-year-old girl presented with abdominal pain and was found to have a 19-cm, complex, right adnexal mass. Preoperative tumor markers were normal and risk assessment favored a benign process. She underwent open ovarian cystectomy with pathology showing FIF. Nine months later, she had a recurrence of her ovarian mass and underwent right oophorectomy, with FIF on pathology. SUMMARY AND CONCLUSION: In patients in whom FIF is discovered within the ovary, consider postoperative surveillance, because of the risk of recurrence or residual disease.

Applied science facilitates the large-scale expansion of protected areas in an Amazonian hot spot.

Meeting international commitments to protect 17% of terrestrial ecosystems worldwide will require >3 million square kilometers of new protected areas and strategies to create those areas in a way that respects local communities and land use. In 2000-2016, biological and social scientists worked to increase the protected proportion of Peru's largest department via 14 interdisciplinary inventories covering >9 million hectares of this megadiverse corner of the Amazon basin. In each landscape, the strategy was the same: convene diverse partners, identify biological and sociocultural assets, document residents' use of natural resources, and tailor the findings to the needs of decision-makers. Nine of the 14 landscapes have since been protected (5.7 million hectares of new protected areas), contributing to a quadrupling of conservation coverage in Loreto (from 6 to 23%). We outline the methods and enabling conditions most crucial for successfully applying similar campaigns elsewhere on Earth.

Update on pediatric metabolic and bariatric surgery.

The prevalence of childhood obesity has risen sharply over the last several decades and poses a significant threat to the health and well-being of today's youth. Childhood-onset obesity is associated with a number of cardiometabolic consequences, which contribute to diminished quality of life. Metabolic and bariatric surgery offers a powerful treatment paradigm with positive long-term health effects. A growing body of literature supports the notion that earlier intervention in younger patients results in long-term health benefits. The development of a multidisciplinary care model and best practice guidelines are central to providing optimal care for this vulnerable patient population. Although the outcomes of metabolic and bariatric surgery in pediatric patients are reassuring and support the ongoing utilization of this important treatment paradigm, a number of significant challenges remain regarding access to care. As the literature continues to support earlier intervention for youth with severe obesity, future efforts should address these challenges to ensure that eligible patients are referred in timely fashion.

Factors Associated with Torsion in Pediatric Patients with Ovarian Masses.

BACKGROUND: Management of ovarian torsion has evolved toward ovarian preservation regardless of ovarian appearance during surgery. However, patients with torsion and an ovarian neoplasm undergo a disproportionately high rate of oophorectomy. Our objectives were to identify factors associated with ovarian torsion among females with an ovarian mass and to determine if torsion is associated with malignancy. METHODS: A retrospective review of females aged 2-21 y who underwent an operation for an ovarian cyst or neoplasm between 2010 and 2016 at 10 children's hospitals was performed. Multivariate logistic regression was used to assess factors associated with torsion. Imaging data were assessed for sensitivity, specificity, and predictive value in identifying ovarian torsion. RESULTS: Of 814 girls with an ovarian neoplasm, 180 (22%) had torsion. In risk-adjusted analyses, patients with a younger age, mass size >5 cm, abdominal pain, and vomiting had an increased likelihood of torsion (P < 0.01 for all). Patients with a mass >5 cm had two times the odds of torsion (odds ratio: 2.1; confidence interval: 1.2, 3.6). Imaging was not reliable at identifying torsion (sensitivity 34%, positive predictive value 49%) or excluding torsion (specificity 72%, negative predictive value 87%). The rates of malignancy were lower in those with an ovarian mass and torsion than those without torsion (10% versus 17%, P = 0.01). Among the 180 girls with torsion and a mass, 48% underwent oophorectomy of which 14% (n = 12) had a malignancy. CONCLUSIONS: In females with an ovarian neoplasm, torsion is not associated with an increased risk of malignancy and ovarian preservation should be considered.

The pediatric surgery match by the numbers: Defining the successful application.

BACKGROUND: Pediatric surgery remains the most competitive general surgery subspecialty. The authors suspected significant inflation in academic metrics since the last published paper. This study aimed to identify factors associated with applicant success in the match. METHODS: After IRB approval, all applications to a single accredited pediatric surgery fellowship program were reviewed for match years 2014-2018. Matched and unmatched applicants were compared in an unadjusted and adjusted analysis. RESULTS: This training program received 414 of 425 total applications (97%). Match results were available for 388 (94%). Matched applicants were more likely to train in programs with pediatric surgery fellowships (64% vs. 28%) and to have dedicated research time (55% vs. 21%; all p < 0.01). Matched applicants had more total publications (median: 12 vs. 7, p < 0.01) and higher ABSITE scores (median: 64th vs. 59th percentile, p < 0.01). Training in multiple programs negatively impacted the chance to match (p < 0.01). The median number of publications per applicant increased over the study time period from 7 to 11 (p < 0.01). CONCLUSIONS: The likelihood of matching into a pediatric surgery fellowship was related to the type of residency attended, dedicated research time, ABSITE scores, and number of publications. Overall, the total number of publications reported by all applicants increased. TYPE OF STUDY: Retrospective Comparative Study. LEVEL OF EVIDENCE: Level III.

Understanding the Value of Tumor Markers in Pediatric Ovarian Neoplasms.

PURPOSE: The purpose of this study was to determine the diagnostic accuracy of tumor markers for malignancy in girls with ovarian neoplasms. METHODS: A retrospective review of girls 2-21 years who presented for surgical management of an ovarian neoplasm across 10 children's hospitals between 2010 and 2016 was performed. Patients who had at least one concerning feature on imaging and had tumor marker testing were included in the study. Sensitivity, specificity, and negative and positive predictive values (PPV) of tumor markers were calculated. RESULTS: Our cohort included 401 patients; 22.4% had a malignancy. Testing for tumor markers was inconsistent. AFP had high specificity (98%) and low sensitivity (42%) with a PPV of 86%. The sensitivity, specificity, and PPV of beta-hCG was 44%, 76%, and 32%, respectively. LDH had high sensitivity (95%) and Inhibin A and Inhibin B had high specificity (97% and 92%, respectively). CONCLUSIONS: Tumor marker testing is helpful in preoperative risk stratification of ovarian neoplasms for malignancy. Given the variety of potential tumor types, no single marker provides enough reliability, and therefore a panel of tumor marker testing is recommended if there is concern for malignancy. Prospective studies may help further elucidate the predictive value of tumor markers in a pediatric ovarian neoplasm population. TYPE OF STUDY: Retrospective Cohort Review. LEVEL OF EVIDENCE: Level III.

Strain-programmable fiber-based artificial muscle.

Artificial muscles may accelerate the development of robotics, haptics, and prosthetics. Although advances in polymer-based actuators have delivered unprecedented strengths, producing these devices at scale with tunable dimensions remains a challenge. We applied a high-throughput iterative fiber-drawing technique to create strain-programmable artificial muscles with dimensions spanning three orders of magnitude. These fiber-based actuators are thermally and optically controllable, can lift more than 650 times their own weight, and withstand strains of >1000%. Integration of conductive nanowire meshes within these fiber-based muscles offers piezoresistive strain feedback and demonstrates long-term resilience across >105 deformation cycles. The scalable dimensions of these fiber-based actuators and their strength and responsiveness may extend their impact from engineering fields to biomedical applications.

Factors Associated With Management of Pediatric Ovarian Neoplasms.

BACKGROUND: Available evidence supports ovary-sparing surgery for benign ovarian neoplasms; however, preoperative risk stratification of pediatric ovarian masses can be difficult. Our objective of this study was to characterize the surgical management of pediatric ovarian neoplasms across 10 children's hospitals and to identify factors that could potentially aid in the preoperative risk stratification of these lesions. METHODS: A retrospective review of girls and women aged 2 to 21 years who underwent surgery for an ovarian neoplasm between 2010 and 2016 at 10 children's hospitals was performed. Multivariable logistic regression was used to examine the relationships between the preoperative cohort characteristics, procedure performed, and risk of malignancy. RESULTS: Among 819 girls and women undergoing surgery for an ovarian neoplasm, malignant lesions were identified in 11%. The overall oophorectomy rate for benign disease was 33% (range: 15%-49%) across institutions. Oophorectomy for benign lesions was independently associated with provider specialty (P = .002: adult gynecologist, 45%; pediatric surgeon, 32%; pediatric gynecologist, 18%), premenarchal status (P = .02), preoperative suspicion for malignancy (P < .0001), larger lesion size (P < .0001), and presence of solid components (P < .0001). Preoperative findings independently associated with malignancy included increasing size (P < .0001), solid components (P = .003), and age (P < .0001). CONCLUSIONS: The rate of oophorectomy for benign ovarian disease remains high within the pediatric population. Identification of factors associated with the choice of procedure and the risk of malignancy may allow for improved preoperative risk stratification and fewer unnecessary oophorectomies. These results have been used to develop and validate a multidisciplinary preoperative risk stratification algorithm that is currently being studied prospectively across 10 institutions.

Pediatric Extracorporeal Membrane Oxygenation Mortality Is Related to Extracorporeal Membrane Oxygenation Volume in US Hospitals.

BACKGROUND: Our objective was to examine extracorporeal membrane oxygenation (ECMO) utilization and determine whether pediatric-specific and overall ECMO volumes are associated with mortality rates. METHODS: State Inpatient Databases from 17 states were queried for ECMO admissions during 2008-2014. Hospitals in which >90% of their ECMO patients were ≤18 y old were considered pediatric ECMO centers. Hospital overall ECMO volumes were calculated as the average annual number of admissions, of any age, and categorized as <6, 6-14, 15-30, and >30. Multivariable analyses were conducted to examine the impact of ECMO volume on pediatric in-hospital mortality. RESULTS: There were 4546 pediatric ECMO admissions across 84 hospitals. Most patients were neonates (59.9%), and the most common indication for ECMO was neonatal respiratory failure (20.1%). Approximately 35% of hospitals offering pediatric ECMO averaged <6 annual ECMO admissions. Centers with >30 annual ECMO admissions had significantly lower mortality than hospitals with lower ECMO volume. Among the high-volume centers, pediatric ECMO centers had significantly lower mortality rates than high-volume nonpediatric ECMO centers (17.4% versus 38.2%). CONCLUSIONS: A high proportion of hospitals performing pediatric ECMO have a low number of annual ECMO admissions. Pediatric centers with high volume had the lowest risk-adjusted mortality rates for pediatric ECMO.

Disparities in Radiation Burden from Trauma Evaluation at Pediatric Versus Nonpediatric Institutions.

BACKGROUND: Computed tomography (CT) imaging protocols and prescribing practices vary across institutions. Pediatric trauma patients imaged at a pediatric trauma center (PTC) may receive less radiation than patients imaged at non-PTCs before transfer. Our objective was to determine differences in radiation exposure from imaging performed at a PTC versus non-PTCs. METHODS: This retrospective analysis included patients <18 y old who underwent CT imaging from January 2013 to August 2015 during a trauma-related encounter. Radiation doses from CT scans were estimated and compared between scans performed at our PTC and non-PTCs before patient transfer using propensity score-weighted median regression. RESULTS: Of 3530 CT scans, 3021 were performed at our PTC and 509 at non-PTCs. Patients imaged at non-PTCs were older and had higher injury severity (all P < 0.05). Patients imaged at non-PTCs more frequently had neck CT (29.0% versus 7.3%) and chest CT (8.3% versus 2.7%), less frequently had abdomen/pelvis CT (19.5% versus 27.9%, all P < 0.01), and had similar rates of head CT (83.9% versus 80.9%, P = 0.18). After propensity weighting, CT scanning was more frequent at non-PTCs and patients received higher cumulative radiation exposure overall (median effective dose 2.36 versus 1.57 mSv, P < 0.001) and for each body region imaged (17% more for head, 191% for neck, 81% for chest, and 33% for abdomen/pelvis). CONCLUSIONS: Pediatric trauma patients imaged at a PTC receive lower radiation burden from CT imaging than patients initially imaged at adult institutions. Broader adoption of pediatric dosing protocols or deferring noncritical CT scans until transfer may mitigate these disparities.

Can ultrasound reliably identify complicated appendicitis in children?

BACKGROUND: The ability of ultrasound to identify specific features relevant to nonoperative management of pediatric appendicitis, such as the presence of complicated appendicitis (CA) or an appendicolith, is unknown. Our objective was to determine the reliability of ultrasound in identifying these features. METHODS: We performed a retrospective study of children who underwent appendectomy after an ultrasound at four children's hospitals. Imaging, operative, and pathology reports were reviewed. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of ultrasound for identifying CA based on pathology and intraoperative findings and an appendicolith based on pathology were calculated. CA was defined as a perforation of the appendix. Equivocal ultrasounds were considered as not indicating CA. RESULTS: Of 1027 patients, 77.5% had simple appendicitis, 16.2% had CA, 5.4% had no evidence of appendicitis, and 15.6% had an appendicolith. Sensitivity and specificity of ultrasound for detecting CA based on pathology were 42.2% and 90.4%; the PPV and NPV were 45.8% and 89.0%, respectively. Sensitivity and specificity of ultrasound for detecting CA based on intraoperative findings were 37.3% and 92.7%; the PPV and NPV were 63.4% and 81.4%, respectively. Sensitivity and specificity of ultrasound for detecting an appendicolith based on pathology were 58.1% and 78.3%; the PPV and NPV were 33.1% and 91.0%, respectively. Results were similar when equivocal ultrasound and negative appendectomies were excluded. CONCLUSIONS: The high specificity and NPV suggest that ultrasound is a reliable test to exclude CA and an appendicolith in patients being considered for nonoperative management of simple appendicitis.

Variability in outcomes after gastroschisis closure across U.S. children's hospitals.

BACKGROUND: In patients undergoing gastroschisis closure, the effects of timing of closure and patient and hospital-level characteristics on length of stay (LOS) and time to enteral autonomy are unknown. STUDY DESIGN: Using the Pediatric Health Information System, we compared neonates who underwent early (within 1day of birth) versus delayed (>1day after birth) gastroschisis closure from 2005 to 2013. We evaluated the relationship between time to closure and both LOS and days on total parenteral nutrition (TPN). RESULTS: Of 4459 neonates with gastroschisis, 43.9% underwent early closure and 56.1% underwent delayed closure. Delayed closure, complicated gastroschisis, government insurance, lower birth weight, older age at closure, and complex chronic conditions were associated with longer LOS and days on TPN (all p<0.05). There was significant inter-hospital variability in both outcomes, after adjusting for patient- and hospital-level characteristics, including hospitals' gastroschisis and neonatal volumes, median age at closure, and percentages of complicated and delayed gastroschisis patients, (p<0.01). CONCLUSION: Delayed gastroschisis closure is associated with longer LOS and duration of TPN, even after excluding complicated cases. Furthermore, after controlling for hospital volume, rate of complicated gastroschisis, and timing of closure, the persistent inter-hospital variability suggests that practice variability is partially responsible for these differences. TYPE OF STUDY: Retrospective study. LEVEL OF EVIDENCE: III.

Reducing the Number of Anesthetic Exposures in the Early Years of Life: Circumcision and Myringotomy as an Example.

Evidence suggests multiple anesthetics in early childhood may increase risk for neurodevelopmental injury. We evaluated proportions of children undergoing circumcision and myringotomy, concomitantly with or prior to circumcision, and compared costs between groups. The Pediatric Health Information System was queried for males aged 6 to 36 months who underwent circumcision in 2009-2014. Relative to circumcision, the proportion who underwent myringotomy previously, concomitantly, or both, was calculated. Of 29 789 patients who underwent circumcision, 822 also underwent myringotomy; 342 (41.6%) underwent myringotomy on a previous day, and 480 (58.4%) underwent myringotomy at time of circumcision. Total hospital costs were lower for concomitant procedures (median $2994 vs $4609, P < .001. In total, 58.4% of patients who underwent circumcision and myringotomy did so concomitantly. Combined procedures resulted in significantly reduced costs and potentially minimized neurocognitive risk. Ideally, both referring pediatricians and surgical specialists should inquire about other surgical needs to optimize the availability of concomitant procedures.

Does clinic visit education within a multidisciplinary center improve health literacy scores in caregivers of children with complex colorectal conditions?

INTRODUCTION: Health literacy is low in an estimated one-third of the US population. Little is known about the health literacy of caregivers of children with colorectal conditions. The objective of this study was to investigate whether a timed health literacy intervention could improve health literacy in this population. METHODS: We used the BRIEF Health Literacy screening (BHLS) tool on caregivers of children who came to our colorectal clinic. Health literacy was categorized as inadequate, marginal, or adequate. The number of caregivers with adequate health literacy was compared to the number of clinic visits and socioeconomic status. RESULTS: We included 233 caregivers. The average number of clinic visits was 3.5 over 1.2years. At the first clinic visit, 70% (n=98) of caregivers had "adequate" health literacy. Scores improved to 88% (p=0.024) after the fourth visit. Socioeconomic factors were not associated with health literacy. Patients of caregivers with "adequate" health literacy visited our clinic 3.8 times, compared to 2.7 times for those with lower literacy (p=0.006). CONCLUSION: Emphasis on providing an education-based approach at each visit increased health literacy significantly. As expected, health literacy was lowest during the first visit, which we believe is the optimal time to implement educational interventions. TYPE OF STUDY: Case Control/Retrospective Comparative Study. LEVEL OF EVIDENCE: Level III.

Effect of bladder augmentation on VP shunt failure rates in spina bifida.

PURPOSE: Most patients with spina bifida require ventriculoperitoneal (VP) shunt placement. Some also require bladder augmentation, which may increase the risk of VP shunt malfunction and/or failure. The aim of this study was to assess whether bladder augmentation affects the rate of VP shunt failure in this population. METHODS: Using the Pediatric Health Information System, we studied patients with spina bifida born between 1992 and 2014 who underwent VP shunt placement. Using conditional logistic regression, we compared age- and hospital-matched patients who did and did not undergo a bladder augmentation to determine their difference in rates of VP shunt failure. RESULTS: There were 4192 patients with spina bifida who underwent both surgical closure and VP shunt placement. Of these, 203 patients with bladder augmentation could be matched to 593 patients without bladder augmentation. VP shunt failure occurred within 2 years in 7.7% of patients, the majority of whom were in the group who underwent bladder augmentation (87%). After adjusting for confounders, undergoing bladder augmentation was independently associated with VP shunt failure (HR: 33.5, 95% CI: 13.15-85.44, p< 0.001). CONCLUSION: Bladder augmentation appears to be associated with VP shunt failure. Additional studies are necessary to better define this relationship and identify risk-reduction techniques.

Complications in children with ulcerative colitis undergoing ileal pouch-anal anastomosis.

Total colectomy with ileal pouch-anal anastomosis (IPAA) is considered the standard procedure for the surgical management of ulcerative colitis. Despite the widespread utility of the procedure, as many as 75% of patients who undergo IPAA, experience at least 1 complication. This review highlights difficult intraoperative scenarios and complications of pouch surgery in children, including intraoperative, postoperative, and functional complications. Intraoperative scenarios include insufficient mesenteric length and positive leak tests. Postoperative complications include surgical site infection, anastomotic leak, stricture, fistula, pouchitis, small bowel obstruction, and pouch failure. Less common complications include afferent limb syndrome, pouch prolapse, and superior mesenteric artery syndrome. Functional complications include incontinence, impaired quality of life, infertility, and sexual dysfunction. Despite complications, most patients are satisfied with their outcomes and report an improvement in their lifestyle.

Using quality improvement methodology to improve ovarian salvage for benign ovarian masses.

PURPOSE: Most ovarian masses in children are benign and potentially amenable to ovarian salvage surgery (OSS). Despite the common use of OSS among pediatric and adolescent gynecologists (PAG) in recognition of reproductive and hormonal health advantages, this technique is not commonly performed by pediatric surgeons. The aim of this quality improvement (QI) initiative was to improve our institutional rate of OSS for benign ovarian masses. METHODS: Baseline data were obtained retrospectively from surgical procedures performed for benign ovarian masses between January 2012 and February 2016. Designed interventions to improve the rate of OSS included the development of an ovarian mass algorithm, standardization of radiologic templates, multidisciplinary analyses of ovarian procedures, and implementation of a training model for performing OSS. Procedures performed for benign ovarian masses from March 2016 to February 2017 comprised the process stage. RESULTS: Our institutional baseline OSS rate was 28.8%. After implementation of the institutional algorithm, a single oophorectomy was performed for a benign mass, increasing the OSS rate to 96%. There have been no missed ovarian malignancies. CONCLUSIONS: Utilizing preoperative risk assessment, QI methodology and multidisciplinary collaboration resulted in improved OSS rates for benign ovarian masses with no evidence of missed ovarian malignancies. LEVEL OF EVIDENCE: Level II. This is a prospective comparative study, with comparison to a retrospective cohort. This is a quality improvement initiative without randomization.

Safety and Tolerability of Laser Hair Depilation in Pilonidal Disease: A Pilot Study.

BACKGROUND: Pilonidal disease is a common and painful disorder that can be challenging to manage. Recurrent surgical treatment is often warranted and may result in significant morbidity, with reported wound complication rates as high as 30%. Laser hair depilation of the natal cleft may decrease the incidence of recurrence. The purpose of this study was to assess the safety and tolerability of laser hair depilation in adolescents with pilonidal disease. METHODS: We performed a prospective, single arm, pilot trial of laser hair depilation to the natal cleft in 13 patients with pilonidal disease. Each patient received an outpatient laser depilation treatment every four weeks with a goal of five total treatments. Follow-up tolerability was measured after each treatment by obtaining Likert scale, patient-reported, pain scores immediately after laser treatment and every six hours post-treatment, for the first 24 hours. Consistent pain scores <4 were used as a proxy for tolerability. The primary end point was tolerability and safety, defined as pain scores consistently <4 and no deep second-degree burns during the 24-hour post-treatment period. The secondary end point was disease recurrence at one year. RESULTS: Thirteen patients were enrolled with 12 patients completing five laser depilation treatment sessions and one patient completing only four. There was 100% tolerability of treatments with no occurrence of second-degree burns. No patient was unable to complete a treatment session because of discomfort. Significantly diminished hair growth was noted after three treatments. All 13 patients were recurrence-free at a median follow-up of 13 months post-treatment initiation. CONCLUSIONS: Laser hair depilation is safe and well tolerated in adolescents with pilonidal disease and may be effective at decreasing pilonidal disease recurrence. A prospective randomized controlled trial is planned to determine effectiveness of laser hair depilation compared with chemical/mechanical depilation methods in preventing pilonidal disease recurrence.

Perioperative blood transfusion and complications in children undergoing surgery for solid tumors.

BACKGROUND: The objective was to assess whether perioperative blood transfusion (PBT) is associated with postoperative complications in children undergoing surgery for a solid tumor. METHODS: Using 2012-2014 National Surgical Quality Improvement Program Pediatric data, we identified patients aged 0-18 years who underwent surgery (biopsy or resection) for solid tumors. We compared demographic, clinical, and 30-day outcome characteristics between children who did and did not receive a PBT within 72 hours after surgery. Propensity score-matched analyses were used to estimate the effect of PBT on postoperative complications, in the overall cohort, the subgroup undergoing resection, and the subgroup with liver tumors. RESULTS: Of 961 patients who underwent surgery for solid tumors, 27.8% required PBT. Patients requiring PBT were more likely to have preoperative risk factors, including ventilator dependence, hematologic disorders, chemotherapy, sepsis, transfusion before surgery, and an American Society of Anesthesiologists class ≥3 (all P ≤ 0.01). In propensity score-matched analyses, PBT was not associated with overall complication risk (odds ratio [OR]: 1.50, P = 0.07) but was associated with an increased risk of postoperative mechanical ventilation (OR: 3.78, P < 0.001). Of the 750 patients undergoing tumor resection, 36.3% required PBT. After propensity matching, PBT was associated with overall postoperative complications (OR: 1.76, P = 0.02). Of 163 patients with liver tumors, 52.8% required PBT. After propensity matching, PBT was not associated with postoperative complications (OR: 2.00, P = 0.09). PBT was associated with a longer postoperative length of stay in all three analyses (all P < 0.01). CONCLUSIONS: PBT was associated with higher risks for postoperative complications in children undergoing surgery for solid tumors.