Breast implant surface topography triggers a chronic-like inflammatory response

Breast implants are extensively employed for both reconstructive and esthetic purposes. However, the safety of breast implants with textured surfaces has been questioned, owing to a potential correlation with anaplastic large-cell lymphoma and the recurrence of breast cancer. This study investigates the immune response elicited by different prosthetic surfaces, focusing on the comparison between macrotextured and microtextured breast implants. Through the analysis of intraoperatively harvested periprosthetic fluids and cell culture experiments on surface replicas, we demonstrate that macrotextured surfaces elicit a more pronounced chronic-like activation of leucocytes and an increased release of inflammatory cytokines, in contrast to microtextured surfaces. In addition, in vitro fluorescent imaging of leucocytes revealed an accumulation of lymphocytes within the cavities of the macrotextured surfaces, indicating that the physical entrapment of these cells may contribute to their activation. These findings suggest that the topography of implant surfaces plays a significant role in promoting a chronic-like inflammatory environment, which could be a contributing factor in the development of lymphomas associated with a wide range of implantable devices.

Diagnosis and Management of Congenital H-Type Tracheoesophageal Fistula: Results of a National Survey

BACKGROUND

Congenital h-type tracheoesophageal fistula (H-TEF) without esophageal atresia (EA) represents about 4% of congenital esophageal anomalies. The diagnosis is challenging, and surgery is considered curative. The aim was to report a national survey on the diagnosis, management, and outcome of patients with congenital H-TEF.

METHODS

Following approval of the Italian Society of Pediatric Surgery, a survey was sent to all Pediatric Surgery Units to retrospectively collect H-TEF treated in the period 2010-2022. Descriptive analysis was performed, and results are given as prevalence, mean ± standard deviation (SD), or median and interquartile range (IQR).

RESULTS

The survey was sent to 65 units. Seventeen responded with one or more cases; 78 patients were diagnosed with H-TEF during the study period. Associated malformations were present in 43%, mostly cardiac (31%). The most frequent symptoms were cough (36%), bronchopneumonia (24%), and dysphagia (19%). H-TEF was detected by tracheobronchoscopy (90%), and/or upper GI (58%), and/or esophagoscopy (32%). The median age at diagnosis was 23 days (1 day-18 years). The most common approach was cervicotomy (76%), followed by thoracoscopy (14%) and thoracotomy (9%). The fistula underwent ligation and section of the fistula in 90% of the patients and clip closure and section in 9%. In one patient, the fistula was cauterized endoscopically. H-TEF preoperative cannulation was performed in 68% of cases, and a drain was placed in 26%. One month after surgery, 13% of the patients had mild persisting symptoms, mainly hypophonia. Recurrence occurred in 5%, and a second recurrence occurred in 1%.

CONCLUSIONS

H-TEF prevalence was six cases/year, consistent with the expected rate of five cases/year in our country. The diagnosis was challenging, sometimes delayed, and, in most patients, required multiple examinations. Fistula ligation and section through cervicotomy were the most frequent treatment. Long-term outcomes are good, and recurrence is a rare event.

Lung Function Evaluated By Structured Light Plethysmography in Children After Lung Surgery: A Preliminary Analysis

Background: Structured light plethysmography (SLP) is a novel light-based method that captures chest wall movements to evaluate tidal breathing. Methods: Thirty-two children who underwent lung surgery were enrolled. Their clinical history was collected along with spirometry and SLP. Results: Median age of surgery was 9 months (interquartile range 4-30). Most frequent diagnosis was congenital pulmonary airway malformation (14/32), then pulmonary sequestration (9/32), tumor (5/32), and bronchogenic cyst (4/32). The most frequent surgical approach was lobectomy (59%), segmentectomy (38%), and complete resection (3%). More than 80% had surgery when younger than 3 years of age. Eight patients had short-term complications (pleural effusion was the most frequent), while long-term effects were reported in 15 patients (19% recurrent cough, 13% thoracic deformities, 13% airway infections, 9% wheezing, 6% reduced exercise tolerance, and 3% columnar deformities). Spirometry was normal in 9/22 patients. Nine patients had a restrictive pattern, while 4 showed a mild bronco-reactivity. Ten patients did not perform spirometry because of young age. SLP revealed the presence of obstructive pattern in 10% of patients (IE50 > 1.88) and showed a significant difference between the two hemithorax in 29% of patients. Discussion: SLP may be a new method to evaluate lung function, without collaboration and radiation exposure, in children who underwent lung resection, also in preschool age.

Congenital lung malformations: a nationwide survey on management aspects by the Italian Society of Pediatric Surgery

INTRODUCTION

Over the years, congenital lung malformations (CLM) management remains a controversial topic in pediatric thoracic surgery. The Italian Society of Pediatric Surgery performed a national survey to study the current management variability among centers, trying to define national guidelines and a standardized approach of children with congenital lung malformations.

METHODS

Following a National Society approval, an electronic survey including 35 items on post-natal management was designed, focusing on surgical, anesthesiology, radiology and pneumology aspects. The survey was conducted contacting all pediatric surgical units performing thoracic surgery.

RESULTS

39 pediatric surgery units (97.5%) participated in the study. 13 centers (33.3%) were classified as high-volume (Group A), while 26 centers (66.7%) were low volume (Group B). Variances in diagnostic imaging protocols were observed, with Group A performing fewer CT scans compared to Group B (p = 0.012). Surgical indications favored operative approaches for asymptomatic CLM and pulmonary sequestrations in both groups, while a wait-and-see approach was common for congenital lobar emphysema. Surgical timing for asymptomatic CLM differed significantly, with most high-volume centers operating on patients younger than 12 months (p = 0.02). Thoracoscopy was the preferred approach for asymptomatic CLM in most of centers, while postoperative long-term follow-up was not performed in most of the centers.

CONCLUSION

Thoracoscopic approach seems uniform in asymptomatic CLM patients and variable in symptomatic children. Lack of uniformity in surgical timing and preoperative imaging assessment has been identified as key areas to establish a common national pattern of care for CLM.

Meta-Analysis on Long-Term Outcomes of Pediatric Renal Cancer Survivors Following COG and SIOP Protocols

BACKGROUND

 Pediatric renal cancer survivors have higher rate of chronic renal disease and hypertension. These patients have similar survival rates when treated according to either Children's Oncology Group (COG) or International Society of Pediatric Oncology (SIOP) protocols. We aimed to compare the late outcome of these two approaches.

METHODS

 We performed a meta-analysis of all studies from 2000 to 2021; database search using keywords: long-term outcomes OR late effects, nephrectomy, pediatric renal cancer. For each protocol, data were collected, and the "pooled" outcomes were compared. Continuous and dichotomous variables were obtained with a 95% odds ratio.

RESULTS

 Sixteen studies with a total of 715 pediatric renal cancer survivors were analyzed. The mean follow-up time was 17.4 (standard deviation 5.6) years. Reduced renal function and hypertension were the most encountered long-term complications. The mean estimated glomerular filtration rate was similar in both protocols (101.62 vs. 101.70 mL/min/1.73 m²), while the prevalence of hypertension was 23% in COG and 10% in SIOP. The prevalence of secondary malignancy was 1.1% in COG and 6.7% in SIOP (1.1% vs. 6.7%, p ≤ 0.001). Chronic kidney disease was similar in both groups.

CONCLUSION

 A high prevalence of hypertension was observed among pediatric renal cancer survivors, as well as an increased risk of a secondary tumor. These results emphasize the importance of long-term follow-up into adulthood, to promptly diagnose any long-term side effects of the treatment. Thanks to the increased overall survival, future protocols will pay attention to the reduction of long-term sequelae.

Evaluation of diagnostic time in pediatric patients with eosinophilic gastrointestinal disorders according to their clinical features

Eosinophilic gastrointestinal disorders (EGIDs) are chronic/remittent inflammatory diseases associated with a substantial diagnostic delay, often attributable to misdiagnosis and variable clinical presentation in adults. In the pediatric population, few studies have been conducted worldwide reporting EGID diagnostic delay and its consequences on patients. This study aims to analyze and identify potential clinical factors and complications associated with a longer diagnostic time. We performed a retrospective analysis of pediatric patients with EGIDs followed at the Center for Pediatric EGIDs in Pavia, Italy. A total of 60 patients with EGIDs were enrolled. Thirty-nine (65%) patients had EoE, and 21 (35%) non-esophageal EGIDs. EGID diagnosis was achieved about 2 years after the symptom onset, and the median diagnostic time was 12 months (IQR 12-24 months). Diagnostic time was 12 months (IQR 12-69) in non-esophageal EGIDs and 12 months (IQR 4-24 months) in EoE patients. EoE patients presenting with FTT and feeding issues experienced a longer diagnostic time (p = 0.02 and p = 0.05, respectively) than children without growth and feeding impairments.In this study, symptoms appeared about 2 years before the definitive EGID diagnosis was reached, and this diagnostic time was shorter than the delay observed in other published studies. Especially in EoE children, the diagnostic time is significantly associated with impaired child growth, highlighting the importance of an early diagnosis to prevent esophageal stenosis and failure to thrive.

Pediatric robotic surgery: issues in management-expert consensus from the Italian Society of Pediatric and Neonatal Anesthesia and Intensive Care (SARNePI) and the Italian Society of Pediatric Surgery (SICP)

BACKGROUND

Pediatric robotic-assisted surgeries have increased in recent years; however, guidance documents are still lacking. This study aimed to develop evidence-based recommendations, or best practice statements when evidence is lacking or inadequate, to assist surgical teams internationally.

METHODS

A joint consensus taskforce of anesthesiologists and surgeons from the Italian Society of Pediatric and Neonatal Anesthesia and Intensive Care (SARNePI) and the Italian Society of Pediatric Surgery (SICP) have identified critical areas and reviewed the available evidence. The taskforce comprised 21 experts representing the fields of anesthesia (n = 11) and surgery (n = 10) from clinical centers performing pediatric robotic surgery in the Italian cities of Ancona, Bologna, Milan, Naples, Padua, Pavia, Perugia, Rome, Siena, and Verona. Between December 2020 and September 2021, three meetings, two Delphi rounds, and a final consensus conference took place.

RESULTS

During the first planning meeting, the panel agreed on the specific objectives, the definitions to apply, and precise methodology. The project was structured into three subtopics: (i) preoperative patient assessment and preparation; (ii) intraoperative management (surgical and anesthesiologic); and (iii) postoperative procedures. Within these phases, the panel agreed to address a total of 18 relevant areas, which spanned preoperative patient assessment and patient selection, anesthesiology, critical care medicine, respiratory care, prevention of postoperative nausea and vomiting, and pain management.

CONCLUSION

Collaboration among surgeons and anesthesiologists will be increasingly important for achieving safe and effective RAS procedures. These recommendations will provide a review for those who already have relevant experience and should be particularly useful for those starting a new program.

Rise of pediatric robotic surgery in Italy: a multicenter observational retrospective study

Background

The minimally invasive surgery (MIS) in term of robot-assisted surgery changed in a dramatic way the surgical approach either in adults or children. For many specialties (urology, gynecology, general surgery) robotic surgery rapidly became the gold standard for some procedures, while the experience in pediatric population is not wide for some reasons. The aim of this study is to retrospective analyze trends of application of robotic surgery in pediatric patients across the country, focusing on indications, limitations, development, and training acquired by national experience and in comparison to the literature.

Methods

We made a retrospective multicenter study on behalf of Italian Society of Pediatric Surgery. We performed a census among all pediatric surgery units in the country to enroll those performing robotic surgery on children between 2013 and 2019.

Results

We enrolled 7 pediatric surgery referral Centers (Ancona, Bologna, Brescia, Genova, Pavia, Pescara, Siena). A total of 303 patients were included in the study, 164 males (54%) and 139 females (46%). The most commonly performed interventions for each anatomic area were respectively atypical pulmonary resection (38%), pyeloplasty (49%), and fundoplication (30%).

Conclusions

Since its first application in Italy, about 10 years ago, several considerations were made about application and feasibility of robotics in children.

Eosinophilic gastrointestinal disorders in children and adolescents: A single-center experience

BACKGROUND

To date, few studies have been conducted in Italy on pediatric eosinophilic gastrointestinal diseases (EGIDs).

AIMS

To assess clinical features of pediatric patients with EGIDs who are followed in a tertiary pediatric center.

METHODS

From January 2015 to December 2019, we retrospectively enrolled patients with EGIDs, and collected clinical, endoscopic, and histological data.

RESULTS

We enrolled 112 patients, 75.8% were male. Mean age was 9.3 ± 4.8 years. Diagnosis of EGIDs has increased in the last two years, with non-esophageal EGIDs more prevalent than eosinophilic esophagitis (EoE) (5.1% vs. 4.4%). Approximately 30% of patients had allergic comorbidities, which prevailed in children with EoE. Autism spectrum disorders were common in patients with non-esophageal EGIDs (p = 0.007), a statistically significant finding. In addition, esophageal atresia was associated with EoE (p = 0.04). Most EGIDs patients had normal findings or an inflammatory endoscopic phenotype. Patients with EoE were mainly treated with proton pump inhibitors (PPIs) alone or in combination with swallowed steroids. PPIs, oral steroids, and food-elimination diets were prescribed to patients with non-esophageal EGIDs.

CONCLUSION

This is the first Italian study revealing an increased frequency of EGIDs in a pediatric population. Further studies are needed to characterize patients with these emerging diseases.

Recurrent reactive non-sexually related acute genital ulcers: a risk factor for Behcet's disease?

BACKGROUND AND AIM

Lipschutz ulcers (LU) are idiopathic genital lesions characterized by the sudden appearance of painful, usually symmetric vulvar ulcers, typically occurring in sexually inactive adolescents. LU is a diagnosis of exclusion. As these lesions heal spontaneously, in the absence of tissue scarring, the therapy is mainly symptomatic and focuses on pain relief. Recurrence of LU associated with oral ulcers describes the clinical picture of complex aphthosis, which belongs to Behçet's disease (BD) pathological spectrum. Our work aims to analyze the correct diagnostic approach to recurrent aphthous, focusing on the importance of a multidisciplinary assessment and immunogenetic investigation to identify the subjects at risk of progression towards BD.   Methods: We present the case of a 12-year-old non sexually active Italian girl who was diagnosed with LU. After 15 months, she presented recurrent reactive non sexually related acute genital ulcer associated with a history of oral aphthous. According to clinical features and anamnesis, complex aphthosis was diagnosed. For diagnostic purposes, she underwent an immunogenetic analysis that showed HLA-B51 positivity.

RESULTS

In the absence of clinical and laboratory criteria to define the risk of progression of complex aphtosis towards BD, we think that besides a strict follow-up, in pediatric patients with a suggestive clinical history, it is crucial to adopt a multidisciplinary approach, comprehensive of HLA investigation, in order to guarantee an early diagnosis and a prompt therapeutic intervention.

CONCLUSIONS

In children and adolescents with genital ulcers, it is essential to consider all the possible differential diagnoses to undertake a timely and correct course of treatment.

46, XY Disorders of Sexual Development: a case report and theoretical framework

BACKGROUND AND AIM

Disorders of sexual differentiation (DSD) with karyotype 46,XY include gonadal developmental differences such as complete gonadal dysgenesis, partial gonadal dysgenesis, testicular regression and ovotesticular sexual differentiation disorder, differences in androgen synthesis or action, such as androgen synthesis deficiency, androgen action deficits, LH receptor deficiency, AMH synthesis or action deficits, and other conditions such as severe hypospadias, cloaca estrophy, etc. Methods: A 17 years-old girl came to our attention for hirsutism, clitoral hypertrophy, primary amenorrhea, and bilateral mammary hypoplasia. According to clinical features and anamnesis, the diagnosis of 46, XY DSD was made. For diagnostic purposes, she underwent an extensive genetic analysis, hormone dosage and instrumental examinations. After a clitoridoplasty and hormone replacement treatment, the patient performs appropriate multidisciplinary follow-up and regular psychotherapy.

RESULTS

The clinical case reported falls, according to the recent classification developed by the Chicago Consensus, within the scope of DSD with karyotype 46, XY. About 160 cases of patients with 17β-HSD3 deficiency, diagnosed at a mean age of 12 years, are described in the literature, most of them coming from Western Asia and Europe and only three cases from Eastern Asia. Clinically, about 30% of patients showed virilization, 20% clitoromegaly, ambiguous genitalia, inguinal/labial mass, 16% primary amenorrhea, and 5% absence of mammary development, features that are partly traced in the case described here.

CONCLUSIONS

This case underscores the complexity of managing individuals with DSD. Having acquired the concept that irreversible surgery should be avoided, except in cases where failure to do so would determine health risks, the primary objective of the medical decision lies in meeting conditions aimed at harmonious sexual identification, especially regarding sexual activity and fertility, involving a team of experienced professionals (psychologists, pediatricians, surgeons, endocrinologists, radiologists), capable of promptly identifying suggestive clinical signs.

The Effectiveness of Abdominal Lymphangioma Laparoscopic Removal in Children: A Single Center Experience

Background: Lymphangiomas represent 5% of all benign pediatric tumors. Abdominal lymphangiomas (ALs) are extremely rare. Therapy includes surgery, sclerotherapy, or pharmacological treatment. Laparoscopic resection (LR) has been already described, but mainly as case reports. The aim of this study is to present our series of ALs LR. Materials and Methods: From 2007 to 2020, 10 cases of ALs were electively treated by LR. Patients' age ranged from 4 months to 14 years. Preoperative diagnosis was achieved by ultrasonography and magnetic resonance images. In all cases LR was performed with four trocars: a 10 mm transumbilical trocar for camera and extraction and three 3-5 mm operative trocars. Results: Lymphangiomas arise from mesocolon in 5 giant cases, ileal mesentery in 3 and right adrenal gland in 2. LR was achieved without intraoperative complications and need of conversion in all cases. Two giant cases needed a percutaneous puncture under laparoscopic view to gain working space. A minimal ileal resection by video-assisted procedure was carried out in 2. Median hospital length was 4 days; no recurrence of disease at serial ultrasound examinations was seen at median follow-up of 5.9 years. Discussion: Several approaches have been proposed for AL treatment. The main challenges are the huge dimensions, the difficulty to achieve a complete resection, and the risk of recurrence. In this series, elective LR of ALs resulted as feasible and effective, and we consider it the standard surgical therapy.

Effectiveness of Articulating Linear Stapler for Total and Partial Laparoscopic Splenectomy in Children

Purpose: We performed a retrospective study to determine the effectiveness and feasibility of articulating linear stapler in laparoscopic total splenectomy (LTS) and laparoscopic partial splenectomy (LPS), focusing on technical laparoscopic skills that could help pediatric surgeons to avoid intra- and postoperative complications. Methods: Retrospective cohort study of children younger than 18 years who underwent laparoscopic spleen surgery between January 2008 and March 2020. Age, sex, indication for surgery, operative time (OT), intra- and postoperative complications, and postoperative length of hospital stay (LHS) were analyzed. Data from parenchymal resection and vessels sealing techniques were obtained. Results: Thirty patients, 19 LTS and 11 LPS, were included. The mean age of the patients was 10.9 years, and 16 patients were male and 14 were female. For hematologic diseases, LTS was the elective surgery, associated with cholecystectomy in 5 cases. LPS was the common procedure for splenic cysts. The stapler was used in LTS to close the hilum vessels and in LPS for parenchymal resection. No statistically significant differences in OT were observed comparing LTS and LPS. Two conversions occurred in LTS; none in LPS. The mean LHS was 6 days in both groups. No recurrence or major complications appeared in both groups at 1-12 years of follow-up. In particular for LPS, there are no relapse of cyst neither reduction in splenic function. Conclusions: This study shows the effectiveness, feasibility, and safety of mechanic stapler in splenic surgery both for hilum vessels sealing and for parenchymal resection. The use of this device can reduce risk of hemorrhagic recurrences or major surgical complications improving the safety of the operation.

Eosinophilic colitis in children: a new and elusive enemy?

PURPOSE

Eosinophilic gastrointestinal disorders are rare in children and present with a broad spectrum of non-specific symptoms. To date, no guidelines for diagnosis, therapy and follow-up are validated. Aim of our study is to focus on eosinophilic colitis (EC), to determine a possible correlation between associated disorders, macroscopic findings and treatment/follow up.

METHODS

Retrospective study from 2015 to 2019 including all colonoscopies performed at our Institution. Eosinophilic colitis was defined according to the threshold identified by Collins: > 100 Eo/Hpf: right colon, > 84 Eo/Hpf transverse and left colon, > 64 Eo/Hpf sigma and rectum. We excluded colonoscopy in patients with IBD or other diseases causing hypereosinophilia (i.e., parasite infection, GVHD).

RESULTS

Among 399 colonoscopies performed in 355 patients, we made 50 diagnosis of EC, 36 males, 14 females, median age 8.5 (3-17). Symptoms leading to endoscopy were recurrent abdominal pain (66%), chronic diarrhea (64%), and chronic constipation (8%). Two patients presented with GI bleeding and one with weight loss. Macroscopic findings were mostly normal or lymphoid nodular hypertrophy presenting different endoscopic features. In seven children (14%) we found history of allergy and atopy. 22 children present a diagnosis of autistic spectrum disorder (ASD) with a prevalence higher than in the overall population (44% vs 28.5%, p = 0.03). According to symptoms, treatment consist variably of steroids, six food elimination diet, mesalamine. For patients with available follow-up, we found histological persistence of Eosinophils in 75%, even in patients with symptoms relief.

CONCLUSION

This study focus attention on EC as a new challenging pathology. Multicentric randomized clinical trials are needed to understand physiopathological mechanisms to validate a possible endoscopic score and related histological threshold, and to standardize therapy according to clinical features and instrumental findings. The high prevalence of EC in ASD need further specific research.

Malignant sacrococcygeal germ cell tumors in childhood: The Associazione Italiana Ematologia Oncologia Pediatrica (AIEOP) experience

PURPOSE

To evaluate clinical features at diagnosis, prognostic factors, and outcomes of malignant sacrococcygeal germ cell tumors (SC-GCTs) in patients enrolled in the Associazione Italiana Ematologia Oncologia Pediatrica (AIEOP) TCG 2004 protocol.

PATIENTS AND METHODS

A prospective analysis was conducted on all consecutive patients diagnosed with malignant SC-GCTs between January 2004 and May 2017. Patients with stage I underwent surgery and subsequent surveillance, the others received pediatric cisplatinum-etoposide-bleomycin (pPEB) regimen and eventual deferred surgery.

RESULTS

Of 45 patients, 35 were females. Age at diagnosis ranged from 1 day to 3.6 years (median 1.6 years); 26 were stage IV. Of 38 patients who underwent surgery, pathology revealed yolk sac tumor (YST) in 27 and teratoma + YST/embryonal carcinoma in 11, while seven patients were diagnosed based on imaging and elevated levels of alpha-fetoprotein (AFP). Of six patients approached with surgery, only one relapsed and was rescued with first-line chemotherapy. Overall, 38 out of 45 achieved complete remission, three a partial remission, and four were resistant. Ten out of 41 patients who entered remission later relapsed and nine were rescued with a second-line treatment. We observed a global failure percentage of 31% and a 5-year overall survival (OS) and event-free survival (EFS) of 95% and 69%, respectively.

CONCLUSIONS

Chemotherapyis generally effective in malignant SC-GCTs, even though almost one-third of our patients experienced events salvageable with second-line treatment. Most of the relapses occurred within 1 year from diagnosis. A close follow up with serial AFP level monitoring should be done for at least 2 years after diagnosis.

Robotics-Assisted Pediatric Oncology Surgery-A Preliminary Single-Center Report and a Systematic Review of Published Studies

AIM

The use of robotics-assisted surgery in oncology has been proved effective and safe in adults. Despite these results, the use of robotics has been rarely reported for pediatric oncology. Our review aims to evaluate the safety and feasibility of robotics-assisted surgery in this field, analyzing our experience and performing a systematic review of the most recent studies.

METHODS

We reviewed all patients affected by an oncological disease who underwent a robotics-assisted procedure at our institute. We performed a systematic review of the literature from 2012 to 2021 on the subjects.

FINDINGS

A total of 14 patients underwent robotics-assisted tumor resection. Eleven procedures (median age 13.2-years old) were carried out in children with adnexal lesions (seven tumor excision and four ovariectomies). Histological diagnosis was mature teratoma (six), serous papillary cystadenofibromas of the fallopian tube (two), ovarian serous cystadenoma (one), ovarian mucinous cystadenoma (one), and ovarian seromucinous cystadenoma. The median length of stay was 2 days. No recurrences or complications at a median follow-up of 2.1-years were observed. A 5-year-old girl underwent a complete posterior resection of a type 3 sacrococcygeal tumor with a robotics-assisted approach for the dissection of a possible intraabdominal residual component of the lesion. No intra- and postoperative complications were recorded. Complete excision of a recurrent differentiating neuroblastoma of the left para-renal region was performed on a 9-year-old girl. An idiopathic anaphylactic shock occurred 1 day after the procedure. At 9 months' follow-up, no local recurrences of the lesion were observed. Overall, we reported no conversion to open surgery. Lastly, a robotic excision of a growing left superior mediastinal intermixed ganglioneuroblastoma was performed on an 8-year-old girl with no postoperative complications. Follow-up was uneventful (7 months). In the literature, the rate of complications ranges from 0 to 28%, mainly related to difficult dissection and impaired anatomy. Conversion is reported in 5% of all oncological procedures, due to more invading tumors and altered anatomical features. No robotics-related complications were reported.

CONCLUSION

Robotics-assisted surgery in pediatric oncology has proven to be feasible. Nevertheless, its use should be limited to selected cases and performed by highly trained oncological surgeons. Preparation and patient positioning, alongside a correct port placement, are crucial to carrying out these procedures. Further innovations in robotics may allow a wider application of this technology in pediatric oncology.

The Role of Video-Assisted Thoracoscopic Surgery in Pediatric Oncology: Single-Center Experience and Review of the Literature

Aim: Video-assisted thoracoscopic surgery (VATS) has been widely used in the last decades. Nevertheless, the pros and cons of thoracoscopy vs. open surgery in pediatric oncology are still under debate. In literature, VATS has been applied for both diagnostic and ablative surgery to treat neurogenic tumors, thymic neoplasms, lung tumors and metastases, germ cell tumors, lymphoproliferative diseases, and other rare tumors. Recent reviews described excellent outcomes in pediatric oncology as well as in the treatment of adult lung cancer, with a significantly higher rate of mortality and complication in thoracotomy compared to VATS. We reviewed our experience on thoracoscopy in pediatric malignancy and compared it to the literature. Materials and Methods: This was a retrospective cohort-study of pediatric oncological patients who underwent VATS at our institution from 2007 to 2020, and a review of the recent literature on the topic. Results: A total of 43 procedures were performed on 38 oncological patients (18 males, 20 females). Median age was years 7.72 (0.35-18.6). Diagnosis: 10 neurogenic tumors, nine hematological diseases, five metastases, four lypoblastomas, three thymic pathologies, three germ cell tumors, two pleuropneumoblastomas, two myofibroblastic tumors, one myoepithelial carcinoma, one liposarcoma, and three suspected oncological mass. In three cases, a 3D model was elaborated to better plan the surgical approach. Diagnostic biopsies were 22 (51.1%), and ablative surgeries, 21 (48.9%). One neurogenic tumor was resected with the Da Vinci Robot. Median operative time was 120 min (30-420). A drain was left in place in 20 (46.5%) for a median of 4 days. Median length of hospitalization was 5 days (1-18). One case (2.3%) was converted (intraoperative bleeding). There were three post-operative complications (7.0%): one pneumonia, one pleural effusion, and one diaphragmatic paralysis (need for plication). Results were compared to recent literature, and morbidity and conversion rate were comparable to reviewed publications. Conclusion: VATS represents a valuable tool for diagnostic and therapeutic procedures in pediatric oncology. Nonetheless, it is a challenging technique that should be performed by expert surgeons on oncological and mini-invasive surgery. Three-dimensional reconstruction can optimize the pre-operative planning and guarantee a safer and more targeted treatment. Finally, the advent of robotics-assisted surgery represents a new challenge that may further implement the advantages of VATS.

Visceral plexiform schwannoma: A case series

Plexiform schwannoma (PS) is a benign tumour of the peripheral nerve sheath that is typically found in the skin. Fewer than 15 cases of visceral PS have been reported to date in both adults and children. We herein discuss a series of 3 patients (2 male and 1 female) with abdominal PS, aged 10-16 years (mean age, 12 years). All the patients had an acute presentation with abdominal pain, which was associated with rectal bleeding in 1 case and with walking difficulties in 1 case. Radiological investigations included abdominal magnetic resonance imaging (MRI) and computed tomography, along with neurofibromatosis screening (cerebral MRI and dermatological evaluation). Complete removal of the mass was possible in 2 of the patients (in 1 case by laparoscopically assisted surgery). Follow-up was uneventful. Abdominal PS is a rare occurrence. Due to its possible association with neurofibromatosis, the diagnosis of PS should prompt an investigation for other manifestations of this disorder.

Esophageal Atresia: Nutritional Status and Energy Metabolism to Maximize Growth Outcome

BACKGROUND

Long-term negative sequelae of esophageal atresia (EA) may induce poor growth and impaired nutritional status in childhood. We describe the nutritional profile and energy metabolism of children with repaired EA to identify malnutrition risk factors and optimize growth management.

METHODS

Twenty-one children (>4 years) were included, and anthropometric measurements, nutritional assessment, and energy metabolism were considered. The subjects were defined as undernourished if they met BMI < -2 standard deviation (SD). To grade undernutrition, we defined the prevalence of underweight, stunting, and wasting (cut-off level of <-2 SD). Medical records were reviewed for the type of EA and surgery and perinatal data.

RESULTS

Malnutrition was detected in 28.6% of children. Underweight was detected in 23.8% of patients (all with undernutrition p < 0.01). Wasting was noted in 28.6% of patients, of these 5 children were undernourished (p < 0.001) and stunting was noticed in only one patient with malnutrition (p = 0.5). Resting expenditure energy (REE) was lower in undernourished subjects compared to subjects with adequate nutritional status (p < 0.001). Malnutrition was associated to: type of EA (p = 0.003, particularly type A and C); intervention including deferred anastomosis due to long-gap repair (p = 0.04) with/or without jejunostomy (p = 0.02), gastric pull-up (p = 0.04), primary anastomosis (p = 0.04), pyloromyotomy in long-gap (p < 0.01); small for gestational age condition (p = 0.001).

CONCLUSIONS

undernutrition risk factors, beyond the type of malformation, surgery, and perinatal factors, must be early considered to personalize nutritional programming. Energy metabolism is important to monitor the nutritional requirements. The management of nutritional issues is surely a contributory factor able to counteract the poor growth of children with EA.

High-pressure balloon dilatation in children: our results in 30 patients with POM and the implications of the cystoscopic evaluation

Primary Obstructive Megaureter (POM) is a common cause of hydronephrosis in children with spontaneous resolution in most cases. High-Pressure Balloon Dilatation (HPBD) has been proposed as a minimally invasive procedure for POM correction in selected patients. The aim of the paper is to review our experience with HPBD in patients with POM. We performed a retrospective study in a single Centre collecting data on patients' demographics, diagnostic modalities, surgical details, results and follow-up. In particular, the endoscopic aspect of the orifice permitted the identification of 3 patterns: adynamic ureteral segment, stenotic ureteric ring and pseudoureterocelic orifice. We performed HPBD in 30 patients over 6 years. We had 23 patients with adynamic distal ureteral segment (type 1), 4 with stenotic ring (type 2) and 3 with ureterocelic orifice (type 3). In 3 patients (10%) the guidewire did not easily pass into the ureter requiring ureteral stenting or papillotomy. Post-operative course was uneventful. Five patients (3 pseudoureterocelic) required open surgery during follow-up. HPBD for the treatment of POM is a safe and feasible procedure and it can be a definitive treatment of POM. Complications are mainly due to double J stent and none of our patients had symptoms related to vescico-ureteral reflux. The aspect of the orifice, identified during cystoscopy, seems to correlate with the efficacy of the dilatation: type 1 and 2 are associated with good and excellent results respectively; type 3 do not permit dilatation in almost all cases requiring papillotomy. HPBD can be performed in selected patients of all paediatric ages as first therapeutic line. The presence of a pseudoureterocelic orifice or long stenosis might interfere with the ureteral stenting and seems associated with worse outcomes.

Bedside surgery in the newborn infants: survey of the Italian society of pediatric surgery

Introduction

This is the report of the first official survey from the Italian Society of Pediatric Surgery (ISPS) to appraise the distribution and organization of bedside surgery in the neonatal intensive care units (NICU) in Italy.

Methods

A questionnaire requesting general data, staff data and workload data of the centers was developed and sent by means of an online cloud-based software instrument to all Italian pediatric surgery Units.

Results

The survey was answered by 34 (65%) out of 52 centers. NICU bedside surgery is reported in 81.8% of the pediatric surgery centers. A lower prevalence of bedside surgical practice in the NICU was reported for Southern Italy and the islands than for Northern Italy and Central Italy (Southern <Northern<Central, p < 0.03). The most frequent clinical characteristics of neonates was preterm neonates with birthweight < 1200 g, with cardiorespiratory instability and/or ventilatory dependence. The most frequently selected indications to surgery were pneumothorax, pleural effusion, pericardial effusion, central venous catheter (CVC) positioning, intestinal perforation, patent ductus arteriosus ligation and congenital diaphragmatic hernia. More than 60% of respondents report no institutional recommendations and dedicated informed consent on bedside surgical procedures. The lack of dedicated areas and infrastructures is considered a relative contraindication to the performance of bedside surgery.

Conclusion

Bedside surgery is performed in the majority of the Italian pediatric surgery centers included in this census. The introduction of a national set of surgery guidelines would be widely welcomed.

The First Reported Pediatric Case of Primary Myoepithelial Carcinoma Involving the Whole Lung: Surgical Radical Treatment and Prosthesis Implant

Primary myoepithelial carcinoma of the lung (PMC-L) arising from the bronchial glands in lower respiratory tract is exceedingly rare. Thus far, few cases in adults and only one in a pediatric patient have been recorded. To our knowledge, this is the first report of PMC-L successfully removed in a child, focusing on the importance of multidisciplinary primary surgery for the treatment of this tumor. A 7-year-old girl was admitted for persistent cough and fever; she was unresponsive to oral antibiotics. Chest radiography showed loss of volume of left lung sustained by almost total atelectasis. After routine clinical investigations, she was referred for computed tomography scan and magnetic resonance imaging that documented the presence of a mass occupying the entire left upper lobe, infiltrating the pulmonary hilum (main bronchus, pulmonary artery, superior pulmonary vein, and pericardium). After multidisciplinary evaluation, the histopathologic diagnosis of PMC-L was established using ultrasonography-guided transthoracic core needle biopsy and bronchoscopic biopsies. She was then subjected to left pneumonectomy under extracorporeal circulation and positioning of a thoracic expander filled with 200 mL of saline solution. The postoperative course was uneventful. With TREP (very Rare Tumor in Pediatric Age) consent radiotherapy was performed (61.2 Gy). At the 10-month follow-up, the patient was alive, breathing normally without any oxygen support, without recurrence of PMC-L or metastasis, and without any chest deformity. To our knowledge, this is the first case where a pediatric patient was successfully operated for PMC-L involving the whole lung. Extracorporeal circulation enabled us to perform radical primary surgery. Prosthesis implant not only maintained normal chest expansion but also allowed focused radiotherapy, thus enabling us to prevent damage to vital organs.

Minimally Invasive Approaches in Pediatric Urolithiasis. The Experience of Two Italian Centers of Pediatric Surgery

Background: Over the last 30 years, the incidence of pediatric urolithiasis (PU) has been increasing and the surgical management has evolved toward a minimally invasive approach (MIA). We reported the experience of two Centers of Pediatric Surgery in the management of PU, focusing on MIA as first choice in treatment. Methods: Data were retrospectively analyzed from October 2009 to October 2019 in children with urolithiasis who were admitted to two referral Italian Centers of Pediatric Surgery. Demographic and clinical data of the patients, features of the urolithiasis, type of surgery were considered. Results: Seventy patients (7.3 ± 5.0 years) with normal renal function were treated for calculi in the pyelocaliceal system (45.7%), ureter (34.3%), bladder (4.3%), urethra (1.4%), and multiple locations (14.3%). Size of calculi was >10 mm in 55.7% of cases (kidney>bladder/urethra>multiple>ureter, p = 0.01). Symptoms were present in 75.7% of patients. Family history was positive in 16.9% of cases. MIA was performed in 59 patients (84.3%): 11.8% shockwave lithotripsy (kidney>ureter>multiple); 32.2% ureteral retrograde surgery (ureteral>other localizations); 30.5% retrograde intrarenal surgery (kidney>other localizations); and 25.4% other procedures including percutaneous nephrolithotomy, cystoscopic bladder stone removal or laser cystolithotripsy (kidney>bladder>multiple). Preoperative stenting was necessary in 52.8% of cases. Four MIA procedures (6.9%, kidney>ureter/multiple) were converted to open surgery. Open surgery was required as first approach in 15.7% of patients (kidney>ureter>multiple) who needed urgent surgery or had associated congenital renal anomalies. In 18/70 of children (25.7%), with prevalence of stones in kidney and multiple location (p < 0.01), a second procedure completed the treatment (88.8% MIA). Intraoperative difficulties were recorded in 8.5% of cases, without difference between location and size of calculi. Late complications (5.7%) were related to displacement and infection of the ureteral stent. Conclusions: MIA resulted to be feasible in more than 75% of primary surgery and in more than 85% of cases requiring a second procedure. Preoperative stent was mandatory in more than 50% of children. The technological evolution allowed to overcome many of the technical difficulties related to the approach to the papilla and lower calyxes. Open surgery is reserved for selected cases and endoscopic surgery represents the best choice of treatment for PU.

Prenatal MRI of neck masses with special focus on the evaluation of foetal airway

BACKGROUND

Prenatal magnetic resonance imaging is the best tool to visualize foetal airway.

OBJECTIVE

To evaluate the performance of MRI in the assessment of foetal airway status in the presence of a neck mass.

MATERIALS AND METHODS

Two paediatric radiologists with 12- and 2-year experience in foetal imaging retrospectively analysed 23 foetal MRI examinations, performed between 2001 and 2016, after a second-level ultrasound suspicious for presence of a neck mass. Postnatal imaging, postoperative report, histology, autopsy, and clinical outcomes were the reference standard to calculate sensitivity, specificity, accuracy, positive predictive value (PPV), and negative predictive value (NPV) of prenatal MRI in detecting airway patency. We used the Cohen к statistics to estimate the interobserver agreement. We also assessed MRI performance in the diagnosis of the mass nature.

RESULTS

We obtained data about postnatal airway status in 19 of 23 patients; prenatal MRI demonstrated a sensitivity of 9/9 [100%, 95% confidence interval (CI) 66-100%], specificity 8/10 (80%, 44-98%), accuracy 17/19 (89%, 67-99%), PPV 9/11 (82%, 48-98%), and NPV 8/8 (100%, 63-100%); the interobserver agreement was perfect. Prenatal MRI correctly identified 21 of 23 masses (к = 0.858); the interobserver agreement was almost perfect (к = 0.851).

CONCLUSION

Prenatal MRI demonstrated high accuracy in assessing foetal airway status and diagnosing mass nature, allowing proper delivery planning.

Agreement between magnetic resonance imaging and computed tomography in the postnatal evaluation of congenital lung malformations: a pilot study

OBJECTIVES

To compare postnatal magnetic resonance imaging (MRI) with the reference standard computed tomography (CT) in the identification of the key features for diagnosing different types of congenital lung malformation (CLM).

METHODS

Respiratory-triggered T2-weighted single-shot turbo spin echo (ss-TSE), respiratory-triggered T1-weighted turbo field echo (TFE), balanced fast field echo (BFFE), and T2-weighted MultiVane sequences were performed at 1.5 T on 20 patients prospectively enrolled. Two independent radiologists examined the postnatal CT and MRI evaluating the presence of cysts, hyperinflation, solid component, abnormal arteries and/or venous drainage, and bronchocele. Diagnostic performance of MRI was calculated and the agreement between the findings was assessed using the McNemar-Bowker test. Interobserver agreement was measured with the kappa coefficient.

RESULTS

CT reported five congenital pulmonary airway malformations (CPAMs), eight segmental bronchial atresias, five bronchopulmonary sequestrations (BPS), one congenital lobar overinflation, one bronchogenic cyst, and three hybrid lesions. MRI reported the correct diagnosis in 19/20 (95%) patients and the malformation was correctly classified in 22/23 cases (96%). MRI correctly identified all the key findings described on the CT except for the abnormal vascularization (85.7% sensitivity, 100% specificity, 100% PPV, 94.1% NPV, 95% accuracy for arterial vessels; 57.1% sensitivity, 100% specificity, 100% PPV, 84.2% NPV, 87% accuracy for venous drainage).

CONCLUSIONS

MRI can represent an effective alternative to CT in the postnatal assessment of CLM. In order to further narrow the gap with CT, the use of contrast material and improvements in sequence design are needed to obtain detailed information on vascularization, which is essential for surgical planning.

KEY POINTS

• Congenital lung malformations (CLMs) can be effectively studied by MRI avoiding radiation exposure. • Crucial features of CLM have similar appearance when comparing CT with MRI. • MRI performs very well in CLM except for aberrant vessel detection and characterization.

Tethered Cord and Anorectal Malformations: A Case Series

INTRODUCTION

 The clinical manifestation of a stretched low-lying cone (LLC) is represented by the tethered cord syndrome (TCS) with cutaneous, urologic, neurologic, and orthopaedic dysfunctions. TC is frequently found in patients with anorectal malformations (ARMs). The aim of our article is to report a series of patients affected by LLC and ARMs and evaluate their management and long-term follow-up results.

MATERIALS AND METHODS

 We performed a retrospective analysis over a period of 15 years including patients with ARM and TC and excluding those with severe polymalformations. We collected information related to the types of malformations and demographic data. We analyzed their management (perinatal protocol, radiological investigations, surgery, and multidisciplinary follow-up). QOL was assessed through the International Classification of Functioning, Disability, and Health for Children and Youth (ICF-CY).

RESULTS

 Thirty-three patients among 210 ARM cases had TC (16%). Eleven of them underwent neurosurgery. One patient had retethering; out of 11 patients, 4 remained stable and 6 improved after surgery (UDS normalization and resolution of symptoms). At a mean follow-up of 10 years, four patients were on clean intermittent catheterization and five on the Peristeen transanal irrigation. The majority of patients were defined as 3 (from 1-bad to 5-excellent) for their physical and mental state.

CONCLUSION

 The use of MRI is considered to complete the ARM screening in detecting TC. The multidisciplinary approach is crucial and helps in defining the management of patients. In fact, it is not clear how the features of ARM and TC affect each other. The selection of cases for surgery should take into account the critical elements.

Peripheral neuroblastic tumor of the kidney: case report and review of literature

INTRODUCTION

Peripheral neuroblastic tumors (PNTs) account for 8%-10% of all pediatric tumors. Adrenal glands and sympathetic ganglia are the commonest site of tumor growth. In the clinicopathologic spectrum of PNTs, neuroblastoma and ganglioneuroma are the most primitive and the most mature tumor form, while ganglioneuroblastoma represents an intermediate state of maturation. Surgical resection is the therapy of choice in localized disease, but can lead to serious complications when performed in the presence of certain imaging-defined risk factors.

CASE PRESENTATION

We present a rare case of primary intrarenal ganglioneuroblastoma diagnosed in a teenager who underwent conservative surgery and, despite this, developed upper pole renal ischemia without loss of parenchymal function.

CONCLUSION

We underline the complex management of these extremely rare cases of neuroblastic tumors, which require a dedicated multidisciplinary team.

Retroperitoneoscopic partial nephrectomy in children: a multicentric international comparative study between lateral versus prone approach

BACKGROUND

Very limited informations are currently available about the best approach to perform retroperitoneoscopic surgery. This multicentric international study aimed to compare the outcome of lateral versus prone approach for retroperitoneoscopic partial nephrectomy (RPN) in children.

METHODS

The records of 164 patients underwent RPN in 7 international centers of pediatric surgery over the last 5 years were retrospectively reviewed. Sixty-one patients (42 girls and 19 boys, average age 3.8 years) were operated using lateral approach (G1), whereas 103 patients (66 girls and 37 boys, average age 3.0 years) underwent prone RPN (G2). The two groups were compared in regard to operative time, postoperative outcome, postoperative complications, and re-operations.

RESULTS

The average operative time was significantly shorter in G2 (99 min) compared to G1 (160 min) (p = 0.001). Only 2 lateral RPN required conversion to open surgery. There was no significant difference between the two groups as for intraoperative complications (G1:2/61, 3.3%; G2:6/103, 5.8%; p = 0.48), postoperative complications (G1:9/61, 14.7%; G2:17/103, 16.5%; p = 0.80), and re-operations (G1:2/61, 3.3%; G2:4/103, 3.8%; p = 0.85). Regarding postoperative complications, the incidence of symptomatic residual distal ureteric stumps (RDUS) was significantly higher in G2 (7/103, 6.8%) compared to G1 (1/61, 1.6%) (p = 0.001). Most re-operations (4/6, 66.6%) were performed to remove a RDUS .

CONCLUSIONS

Both lateral and prone approach are feasible and reasonably safe to perform RPN in children but the superiority of one approach over another is not still confirmed. Although prone technique resulted faster compared to lateral approach, the choice of the technique remains dependent on the surgeon's personal preference and experience. Our results would suggest that the lateral approach should be preferred to the prone technique when a longer ureterectomy is required, for example in cases of vesico-ureteral reflux into the affected kidney moiety, in order to avoid to leave a long ureteric stump that could become symptomatic and require a re-intervention.

Urothelial carcinoma in children: A case series

OBJECTIVE

To report a series of 5 patients with urothelial bladder cancer (UBC) three of them with a history of exposure to amines and only two with gross hematuria.

MATERIALS AND METHODS

After obtaining ethical and legal authorization, we performed a restrospective monocentric study. We collected information of patients with UBC over a period of 10 years. We recorded: age, sex, reason for presentation, familial history and risk factors, preoperative assessment, surgical details, histological type and grade, follow-up.

RESULTS

2 children came to our attention for hematuria and 3 for incidental bladder mass finding, at a median age of 11.8 years. We performed microscopically complete transurethral resection of the tumor (TURB). Median tumor size was 1.8cm. No further therapy was required. All cancers belonged to NMIBC (Non-muscle-invasive Bladder Cancer) considering the 2004 WHO classification: 2 urothelial papillomas, 2 papillary tumors with low grade malignancy (PUN-LPM) and 1 papillary urothelial carcinoma of low histological grade (LG-PUC Ta, N0, M0). There was not any complications and no relapse occurred during follow-up (median 30 months).

CONCLUSIONS

In this study, UBCs presenting at a young age were low-grade and have not recurred in follow-up. This confirms the results of other series reported in Literature. Therefore there might be the space to perform a follow-up dedicated to children.

Gastrointestinal tract carcinoma in pediatric and adolescent age: The Italian TREP project experience

BACKGROUND

Gastrointestinal (GI) carcinomas are very rare in the pediatric and adolescent age range. We report the clinical features, treatment, and outcome of a series of children and adolescents with GI carcinoma prospectively registered in the Italian Tumori Rari in Età Pediatrica (TREP) project.

METHODS

The TREP project developed diagnostic and therapeutic guidelines based on recommendations currently in use for adults. Clinical data were centrally registered and reviewed.

RESULTS

Fifteen patients were registered over the years 2000-2016. Most of the tumors were colorectal carcinomas (12 cases). All but one patient had advanced-stage disease (American Joint Committee on Cancer stages III-IV), and the majority of patients had aggressive histological subtypes, i.e. poorly differentiated (G3) (five patients), mucinous (four patients), and signet ring (two patients) adenocarcinomas. Surgery was performed in 13 of 15 patients, and was radical in nine of 13 patients. Only one patient received postoperative radiotherapy. All patients received chemotherapy, with the addition of bevacizumab in two cases. Nine patients were still alive at the time of the present report, but two of them had only just completed their treatment program and one patient is still on treatment. Six patients died due to disease progression.

CONCLUSIONS

This prospective report on pediatric GI tract carcinomas confirms the rarity and biological aggressiveness of these diseases in pediatric and adolescent age. Further prospective studies are needed to explore the distinct biology of tumor in this age group in order to find new therapeutic targeted agents.

Perioperative management of hypertensive neuroblastoma: A study from the Italian Group of Pediatric Surgical Oncologists (GICOP)

BACKGROUND

Hypertension (HT) is rarely reported in patients affected by Neuroblastoma (NB), and management guidelines are lacking. Clinical features and perioperative medical treatment in such patients were reviewed to 1) ascertain whether a shared treatment strategy exists among centers and 2) if possible, propose some recommendations for the perioperative management of HT in NB patients.

METHODS

A retrospective multicenter survey was conducted on patients affected by NB who presented HT symptoms.

RESULTS

From 2006 to 2014, 1126 children were registered in the Italian Registry of Neuroblastoma (RINB). Of these, 21 with HT (1.8%) were included in our analysis. Pre- and intraoperative HT management was somewhat dissimilar among the participating centers, apart from a certain consistency in the intraoperative use of the alpha-1 blocker urapidil. Six of the 21 patients (28%) needed persistent antihypertensive treatment at a median follow-up of 36months (range 4-96months) despite tumor removal. Involvement of the renal pedicle was the only risk factor constantly associated to HT persistency following surgery. A correlation between the presence of HT and the secretion of specific catecholamines and/or compression of the renal vascular pedicle could not be demonstrated.

CONCLUSION

Based on this retrospective review of NB patients with HT, no definite therapeutic protocol can be recommended owing to heterogeneity of adopted treatments in different centers. A proposal of perioperative HT management in NB patients is however presented.

LEVEL OF EVIDENCE

IV.

Bella Italia: Specialized Pediatric Surgical Care in Italy

Italian pediatric surgery has a long history, rich in events, places, and personalities that make it unique. Our first pediatric surgical unit dates back to the first half of the 19th century and its number has grown exponentially during the following decades, with a maximum flowering in the years after the second world war.

The rich history of pediatric surgery has not prevented it from facing important problems, such as the demographic crisis, underemployment of surgeons, and care of pediatric patients by adult specialists.

The attempt to find solutions to these problems has led to a great deal of efforts not only by pediatric surgeons, but also by the Italian government and institutions, with the implementation of ministerial plans that favor the specificity and growth of our discipline through thematic and territorial networks, through more effective training and specialization plans, the cooperation between the Directors of Pediatric Surgical Units for a better coordination of care, the participation in European networks, such as the recently created ERNs (European Reference Networks).

Many Italian pediatric surgeons are active in International Societies, as members or coordinators, in the design and management of multicenter studies and surveys and even in the creation of new international networks.

The Italian response to the demand for specialization and centralization involves knowledge sharing, large-scale cooperation, transversal between specialists and vertical with governmental authorities for a better and more effective care of pediatric patients.

Currarino syndrome: does the presence of a genetic anomaly correlate with a more severe phenotype? A multicentre study

BACKGROUND/PURPOSE

Currarino syndrome (CS) phenotype, initially described as the triad of hemisacrum, anorectal malformation (ARM) and presacral mass, can be extremely variable. The triad is often incomplete and 3 main CS phenotypical subtypes have been described: Complete, Mild and Minimal. Various associated malformations are often present. Mutations in the MNX1 gene are the main genetic background of CS, although they are not present in almost half of the cases. Aim of our study is to analyze the distribution of the 3 CS subtypes and the incidence of associated malformations in a large sample of patients and to add information about the role of the genetic testing in guiding the diagnostic and prognostic evaluation of CS patients.

METHODS

A multicentre retrospective data collection was performed. CS patients' phenotype was accurately analyzed according to a diagnostic-therapeutic standardized data collection sheet. The distribution of the three CS types and the frequency of each associated malformation were calculated. The phenotype of the patients with a known genetic anomaly was compared to the phenotype of the population with no genetic diagnosis, in order to determine whether the presence of a known genetic defect could correlate with a more severe CS phenotype.

RESULTS

Data from 45 patients were analyzed. Twenty patients (44.5%) presented a Complete CS type, 19 (42.2%) a Mild CS and 6 (13.3%) a Minimal CS. In addition to the classical triad elements, 38 (84.5%) patients showed associated anomalies. The group of patients who resulted positive for a MNX1 mutation comprised a higher number (56.5%) of Complete CS cases than the group of patients that did not carry any MNX1 mutation (13%) (p = 0.0085). We could not find any relationship between CS subtype and the number of associated anomalies (p = 0.5102).

CONCLUSIONS

The presence of a MNX1 mutation seems to correlate with a more severe CS phenotype. MNX1 seems the main responsible for the expression and the severity of the CS triad, while the associated anomalies appear to be prevalently determined by genes sited on different loci. A thorough multidisciplinary diagnostic overview of CS patients should always include genetic counseling and analysis, both in postnatal and prenatal settings.

TYPE OF STUDY

Retrospective Study.

LEVEL OF EVIDENCE

II.

Pediatric Ovarian Torsion and its Recurrence: A Multicenter Study

STUDY OBJECTIVE

To report results of a retrospective multicentric Italian survey concerning the management of pediatric ovarian torsion (OT) and its recurrence.

DESIGN

Multicenter retrospective cohort study.

SETTING

Italian Units of Pediatric Surgery.

PARTICIPANTS

Participants were female aged 1-14 years of age with surgically diagnosed OT between 2004 and 2014.

INTERVENTIONS

Adnexal detorsion, adnexectomy, mass excision using laparoscopy or laparotomy. Different kinds of oophoropexy (OPY) for OT or recurrence, respectively.

MAIN OUTCOME MEASURES

A total of 124 questionnaires were returned and analyzed to understand the current management of pediatric OT and its recurrence. The questionnaires concerned patient age, presence of menarche, OT site, presence and type of mass, performed procedure, OPY technique adopted, intra- and postoperative complications, recurrence and site, procedure performed for recurrence, OPY technique for recurrence, and 1 year follow-up of detorsed ovaries.

RESULTS

Mean age at surgery was 9.79 ± 3.54 years. Performed procedures were open adnexectomy (52 of 125; 41.6%), laparoscopic adnexectomy (25 of 125; 20%), open detorsion (10 of 125; 8%), and laparoscopic detorsion (38 of 125; 30.4%). Recurrence occurred in 15 of 125 cases (12%) and resulted as significant (P = .012) if associated with a normal ovary at the first episode of torsion. Recurrence occurred only in 1 of 19 cases after OPY (5.2%). Ultrasonographic results of detorsed ovaries were not significant whether an OPY was performed or not (P = 1.00).

CONCLUSION

Unfortunately, oophorectomy and open technique are still widely adopted even if not advised. Recurrence is not rare and the risk is greater in patients without ovarian masses. OPY does not adversely affect ultrasonographic results at 1 year. When possible OPY should be performed at the first episode of OT.

Comparative retrospective study on the modalities of biopsying peripheral neuroblastic tumors: a report from the Italian Pediatric Surgical Oncology Group (GICOP)

BACKGROUND

Peripheral neuroblastic tumors are the most common extracranial solid neoplasms in children. Early and adequate tissue sampling may speed up the diagnostic process and ensure a prompt start of optimal treatment whenever needed. Different biopsy techniques have been described. The purpose of this multi-center study is to evaluate the accuracy and safety of the various examined techniques and to determine whether a preferential procedure exists.

METHODS

All children who underwent a biopsy, from January 2010 to December 2014, as a result of being diagnosed with a peripheral neuroblastic tumor, were retrospectively reviewed. Data collected included patients' demographics, clinical presentation, intraoperative technical details, postoperative parameters, complications, and histology reports. The Mann-Whitney U and Fisher's exact tests were used for statistical analysis.

RESULTS

The cohort included 100 patients, 32 of whom underwent an incisional biopsy (performed through open or minimally invasive access) (Group A), and the remaining 68 underwent multiple needle-core biopsies (either imaging-guided or laparoscopy/thoracoscopy-assisted) (Group B). Comparing the two groups revealed that Group A patients had a higher rate of complications, a greater need for postoperative analgesia, and required red blood cell transfusion more often. Overall adequacy rate was 94%, without significant differences between the two groups (100% vs. 91.2% for Group A and Group B, respectively, P = 0.0933).

CONCLUSIONS

Both incision and needle-core biopsying methods provided sub-optimal to optimal sampling adequacy rates in children affected by peripheral neuroblastic tumors. However, the former method was associated with a higher risk of both intraoperative and postoperative complications compared with the latter.

Severe Dumping Syndrome in a 6-year-old Girl with Congenital Microgastria Treated by Hunt-Lawrence Pouch

Microgastria is a rare congenital condition often associated with other anomalies. In the present report we describe the case of a 6-year-old girl with isolated CM who presented with dumping syndrome successfully treated by a Hunt-Lawrence pouch.

Atypical Leydig Cell Tumor in Children: Report of 2 Cases

Leydig cell tumors (LCTs) are rare cord-stromal tumors that may occur in testis or ovaries and may produce androgens or estrogens. The majority has been found in men between the ages of 20 and 60 years. Adults with androgen-secreting LCTs are usually asymptomatic; feminizing syndromes may result from the production of estradiol or the peripheral aromatization of testosterone. In children, LCTs usually present between 5 and 10 years of age with isosexual precocious pseudopuberty or gynecomastia. We report 2 cases of LCT in prepubertal boys presenting with advanced unilateral pubarche and testicular volume asymmetry. Both subjects had normal penis size for age; no axillary hair or other signs of puberty were present. Height velocity was normal, and bone age was coincident with chronological age. Androgen levels were normal, as well as estrogen, corticotropin, and cortisol concentration. Testicular ultrasound demonstrated a testicular mass. Histology examination revealed a well-differentiated LCT. This is the first report of 2 pediatric patients with LCT presenting with advanced pubarche in absence of systemic hyperandrogenism. We hypothesize that the neoplastic cells may locally produce high levels of androgens or androgen-like bioactivity molecules that are responsible for the clinical manifestation. We suggest that a testicular ultrasound should be obtained in all children presenting with unilateral pubarche, with or without hyperandrogenism.

Long term follow-up and transition of care in anorectal malformations: An international survey

BACKGROUND

The aim of the study was to assess current international practice in the long term follow-up, in managing active problems and transition of care for teenagers born with anorectal malformations (ARM).

METHODS

An original survey was administered to delegates attending two large colorectal surgical meetings in 2015. The 21 questions covered long term follow-up, specific issues for teenagers and transition of care.

RESULTS

96/236 delegates completed the survey. Follow-up was routinely suspended before 10 year of age by 33% of respondents. 90% of them did not use a scoring system to assess or risks stratify patients, despite 81% stating that an objective score would be beneficial. 40% of respondents felt that >30% of their teenagers had ongoing active medical or psychosocial issues. 42% thought their patients were not ready to be transitioned. The process of transition should start around 13-16 years according to 54% of respondents. 72% had no protocol for transition and 82% did not hold multidisciplinary meetings with adult practitioners before transition.

CONCLUSIONS

International consensus on the following aspects of the care in ARM is needed: structured long term follow-up, objective assessment and risk stratification scores, pathways of transition and methods to prepare patients, parents and adult practitioners.

Pulmonary Malformations: Predictors of Neonatal Respiratory Distress and Early Surgery

Objectives: The objective of our study is to retrospectively analyze a single-centre series of antenatally detected pulmonary malformations (PM) and to evaluate their postnatal outcome.

Materials and Methods: We retrospectively reviewed all prenatally diagnosed PM patients referred to our Centre in the period between January 1999 and December 2014. All cases were diagnosed by one of our Maternal-Fetal Specialists by US examination. Congenital pulmonary airway malformation (CPAM) volume ratio (CVR), development of fetal complications, need for fetal therapy, need for neonatal resuscitation and timing of surgery were analyzed.

Results: A total of 70 fetuses were diagnosed with a PM in the period of study. An initial CVR higher than 1.6 was found in 16/70 patients (22.8%); 14/16 developed fetal complications (p less than .0001). Fifty-six fetuses (80%) did not develop any complications during pregnancy. To all complicated cases a prenatal treatment was offered, carried out in 12 (1 termination, 1 refusal). Survival rate was 100%. Sixty-three fetuses (90%) were asymptomatic at birth and did not require any neonatal resuscitation. Six patients submitted to fetal therapy and one untreated presented with neonatal respiratory distress, required mechanical ventilation at birth and early surgery in the neonatal period (7/70, 10%).

Conclusion: CVR > 1.6 and the presence of fetal complications can be considered as predictors of respiratory distress at birth and of the need for early surgery. Nevertheless, the vast majority of PM are asymptomatic at birth and only a small group of fetuses require prenatal and postnatal treatment and support.

Effectiveness and properties of the biological prosthesis Permacol™ in pediatric surgery: A large single center experience

INTRODUCTION

The use of prosthetic patches of non-absorbable materials represents a valid tool in the treatment of abdominal wall and diaphragmatic defects in pediatric age. In recent years research has developed biological dermal scaffolds made from a sheet of acellular matrix that can provide the desired support and reduce the occurrence of complications from non-absorbable implant. We present our experience and a systematic review to evaluate the use of biologic prosthesis for abdominal wall closure in pediatric patients.

METHODS

The study from January 2009 to January 2015 involved 20 patients treated with Permacol™ implant. We observed postoperative complications only in patients treated for abdominal wall closure, which is the major indication for the use of Permacol™. We conducted a systematic review and meta-analysis (according to PRISMA) on PubMed/Medline, Scopus and EMBASE regarding the use of biological prosthesis in pediatric population considering the incidence of complications as the primary outcome.

RESULTS

3/20 patients experienced complications: 2 patients with skin necrosis healed conservatively and 1 of them developed laparocele. Thus only 1 patient with incisional hernia had significant surgery complication. In patients who were permanently implanted with Permacol™ it has not determined adverse reactions with optimal functional outcome.

CONCLUSIONS

In accordance with the few data (case reports and case series) reported in literature about pediatric patients, our experience in different pathologies and applications has shown the effectiveness of Permacol™, in particular for the non-occurrence of infections, that often affect the use of prosthesis.

A comparison between laparoscopic and retroperitoneoscopic approach for partial nephrectomy in children with duplex kidney: a multicentric survey

PURPOSE

To compare the outcome of laparoscopic and retroperitoneoscopic approach for partial nephrectomy in infants and children with duplex kidneys.

METHODS

Data of 102 patients underwent partial nephrectomy in a 5-year period using MIS procedures were analyzed. Fifty-two children underwent laparoscopic partial nephrectomy (LPN), and 50 children underwent retroperitoneoscopic partial nephrectomy (RPN). Median age at surgery was 4.2 years. Statistical analysis was performed using χ (2) test and Student's t test.

RESULTS

The overall complications rate was significantly higher after RPN (15/50, 30 %) than after LPN (10/52, 19 %) [χ (2) = 0.05]. In LPN group, complications [4 urinomas, 2 symptomatic refluxing distal ureteral stumps (RDUS) and 4 urinary leakages] were conservatively managed. In RPN group, complications (6 urinomas, 8 RDUS, 1 opening of remaining calyxes) required a re-operation in 2 patients. In both groups no conversion to open surgery was reported. Operative time (LPN:166.2 min vs RPN: 255 min; p < 0.001) and hospitalization (LPN: 3.5 days vs RPN: 4.1 days; p < 0.001) were significantly shorter in LPN group. No postoperative loss of renal function was reported in both groups.

CONCLUSIONS

Our results demonstrate that RPN remains a technically demanding procedure with a significantly higher complications and re-operation rate compared to LPN. In addition, length of surgery and hospitalization were significantly shorter after LPN compared to RPN. LPN seems to be a faster, safer and technically easier procedure to perform in children compared to RPN due to a larger operative space and the possibility to perform a complete ureterectomy in refluxing systems.

Retroperitoneoscopic Heminephrectomy in Duplex Kidney in Infants and Children: Results of a Multicentric Survey

PURPOSE

Retroperitoneoscopic partial nephrectomy (RPN) in children is considered a complex technique with limited diffusion among pediatric surgeons and urologists. We aimed to report the outcome of this technique in infants and children with duplex kidney in a 5-year retrospective multicentric international survey.

MATERIALS AND METHODS

Data on 50 children who underwent RPN (41 upper-pole nephrectomies and 9 lower-pole nephrectomies) were retrospectively collected in this six-institution survey. Median age at surgery was 3.3 years. There were 35 girls and 15 boys. The left side was affected in 28 patients, versus the right side in 22 patients. We assessed intraoperative and postoperative morbidity. Follow-up (median, 2.5 years; range, 12 months-5 years) was based on clinical controls and echo color Doppler renal ultrasound scans.

RESULTS

Median duration of surgery was 255 minutes. Surgery was always performed with the patient in a lateral position. Special hemostatic devices were used for dissection and parenchymal section in all centers. Three patients from two centers (6%) required conversion to open surgery. We recorded seven complications (six peritoneal perforations, one opening of the remaining calyxes) in the 50 cases. Re-operation rate was 0%. Average length of hospital stay was 4.1 days.

CONCLUSIONS

Our survey shows that RPN remains a challenging procedure with a long learning curve, performed only in pediatric centers with huge experience in this field. In our survey operative time was longer than 4 hours. The complication rate remains high (7/50, or 14%), with complications classified as Grade II according to the Clavien-Dindo classification. They did not require further surgery, but they were associated with a prolonged hospital stay.

A cross-sectional nationwide survey on esophageal atresia and tracheoesophageal fistula

BACKGROUND

Our study aims at disclosing epidemiology and most relevant clinical features of esophageal atresia (EA) pointing to a model of multicentre collaboration.

METHODS

A detailed questionnaire was sent to all Italian Units of pediatric surgery in order to collect data of patients born with EA between January and December 2012. The results were crosschecked by matching date and place of birth of the patients with those of diagnosis-related group provided by the Italian Ministry of Health (MOH).

RESULTS

A total of 146 questionnaires were returned plus a further 32 patients reported in the MOH database. Basing on a total of 178 patients with EA born in Italy in 2012, the incidence of EA was calculated in 3.33 per 10,000 live births. Antenatal diagnosis was suspected in 29.5% patients. 55.5% showed associated anomalies. The most common type of EA was Gross type C (89%). Postoperative complications occurred in 37% of type C EA and 100% of type A EA. A 9.5% mortality rate was reported.

CONCLUSIONS

This is the first Italian cross-sectional nationwide survey on EA. We can now develop shared guidelines and provide more reliable prognostic expectations for our patients.