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• Magnamosis represents a minimally invasive treatment for LGEA with limited knowledge available. • A prospective evaluation of 5 LGEA patients consecutively treated with magnetic anastomosis is here reported. • Also highlighting 6-months postoperative outcomes. Aim of study is to report our preliminary experience with magnetic anastomosis (magnamosis) treating long-gap esophageal atresia (LGEA), the most challenging condition of esophageal atresia continuum. Magnamosis has been reported in 20 patients worldwide as an innovative and marginally invasive option. Prospective evaluation of all LGEA patients treated with magnamosis was performed (study registration number: 2535/2021). Main outcomes considered were demographic and surgical features, postoperative complications and feeding within 6-month of follow-up. Between June 2020 and January 2021, 5 LGEA patients (Type A, Gross classification) were treated. Median preoperative gap was 5 vertebral bodies. Magnetic bullets were placed at an average age of 81 days of life, leading to successful magnamosis in all cases: 4 infants had primary magnetic repair (one after thoracoscopic mobilization of the pouches), 1 patient had a delayed magnamosis after Foker's procedure. Esophageal anastomosis was achieved after an average of 8 days. No anastomotic leak was found. All patients developed anastomotic stenosis at 6-month follow-up, requiring a mean of 6 dilations each. Full oral feeding was achieved in 3 patients, while 2 were still on oral-gastrostomy feeding. One patient experienced small esophageal perforation after dilation (3 months after magnamosis), distal to the anastomotic stricture and subsequently developed oral aversion. Our preliminary results suggest magnamosis a safe and effective minimally invasive option in patients with LGEA. Absence of postoperative esophageal leaks may represent a major advantage of magnamosis over conventional surgery, although possible high rate of esophageal stenosis should be further evaluated. IV (Case series with no comparison group) [ABSTRACT FROM AUTHOR]

• What is currently known about this topic? Concerns have been addressed about a higher risk of anastomotic leak and mediastinitis in neonates operated on for EA/TEF who required non-invasive ventilation after extubation in previous studies, with contrasting results. • What new information is contained in this article? Post-operative non-invasive respiratory support could be safely used in EA/TEF infants without a significant increase in risk of anastomotic leak. This should be considered especially in preterm infants in which a prolonged invasive ventilation contribute to the development of bronchopulmonary dysplasia and therefore it should be carefully shifted to non-invasive ventilation as soon as possible, using low pressures and, if necessary, a mild sedation. Infants affected by Esophageal atresia (EA) with or without tracheoesophageal fistula (TEF) may require non-invasive ventilation (NIV) in the post-operative period after elective extubation, especially if born preterm. The aim of the paper is to evaluate the role of different ventilation strategies on anastomotic complications, specifically on anastomotic leak (AL). Retrospective single Institution study, including all consecutive neonates affected by EA with or without TEF in a 5-year period study (from 2014 to 2018). Only infants with a primary anastomosis were included in the study. All infants were mechanically ventilated after surgery and electively extubated after 6–7 days. The duration of invasive ventilation was decided on a case-by-case basis after surgery, based on the pre-operative esophageal gap and intraoperative findings. The need for non-invasive ventilation (NCPAP, NIPPV, and HHHFNC) after extubation and extubation failure with the need for mechanical ventilation in the post-operative period were assessed. The primary outcome evaluated was the rate of anastomotic leak. 102 EA/TEF infants were managed in the study period. Sixty-seven underwent primary anastomosis. Of these, 29 (43.3%) were born preterm. Patients who required ventilation (n = 32) had a significantly lower gestational age as well as birthweight (respectively p = 0.007 and p = 0.041). 4/67 patients had an AL after surgical repair, with no statistical differences among post-operative ventilation strategies. We found no significant differences in the rate of anastomotic leak (AL) according to post-operative ventilation strategies in neonates operated on for EA/TEF. [ABSTRACT FROM AUTHOR]

Background In congenital diaphragmatic hernia (CDH) survivors, failure to thrive is a well-known complication, ascribed to several factors. The impact of lung volume on growth of CDH survivors is poorly explored. Our aim was to evaluate if, in CDH survivors, lung volume (LV) after extubation correlates with growth at 12 and 24 months of life. Method s LV (measured as functional residual capacity-FRC) was evaluated by multibreath washout traces with an ultrasonic flowmeter and helium gas dilution technique, shortly after extubation. All CDH survivors are enrolled in a dedicated follow-up program. For the purpose of this study, we analyzed the correlation between FRC obtained shortly after extubation and anthropometric measurements at 12 and 24 months of age. We also compared growth between infants with normal lungs and those with hypoplasic lungs according to FRC values. A p < 0.05 was considered as statistically significant. Results We included in the study 22 CDH survivors who had FRC analyzed after extubation and auxological follow-up at 12 and 24 months of age. We found a significant correlation between FRC and weight Z-score at 12 months, weight Z-score at 24 months and height Z-score at 24 months. We also demonstrated that CDH infants with hypoplasic lungs had a significantly lower weight at 12 months and at 24 months and a significantly lower height at 24 months, when compared to infants with normal lungs. Conclusion We analyzed the predictive value of bedside measured lung volumes in a homogeneous cohort of CDH infants and demonstrated a significant correlation between FRC and growth at 12 and 24 months of age. An earlier identification of patients that will require an aggressive nutritional support (such as those with pulmonary hypoplasia) may help reducing the burden of failure to thrive. [ABSTRACT FROM AUTHOR]

Aim: To evaluate the correlation between sacral/vertebral anomalies and spinal cord anomalies (SCA) on MRI, in patients with anorectal malformation (ARM). Methods: Patients with ARM consecutively treated between January 1999 and August 2019 were included. Radiological imaging of sacrum and spine were retrospectively analyzed and correlated to the presence of SCA at MRI. Fisher's exact test and X2 test were used as appropriate; p<0.05 was considered statistically significant. Results: 348 patients with ARM were enrolled in the study, 147 presented SCA at MRI. 144 patients showed spinal bone anomalies, isolated vertebral and sacral anomalies were found in 17,6% and 35% respectively. Higher level of ARM was associated with a significant higher prevalence of sacral and vertebral anomalies. A significant correlation was found between the "level" of ARM and the presence of SCA (p<0.05). Sacral anomalies were significantly correlated with the presence of SCA at MRI (p<0.05). SCA were found in 70% of patients with vertebral anomalies (VA) and in 76% of patients with sacral anomalies. The presence of multiple malformations (vertebral and sacral anomalies) are strictly related to the presence of SCA. However, the absence of spinal bone anomalies does not exclude the presence of SCA. SD was the most represented type of SCA (n=94/147), of those 96% had fatty filum. Neurological or neurourological symptoms were detected in 11,5% patients (n=17) with SCA and required neurosurgical intervention. Conclusions: Our data confirm the strong relation between sacral or vertebral anomalies and SCA. However, in our series also patients without sacral/vertebral anomalies had SCA at MRI. Our results suggest that, despite the presence or absence of spinal anomalies, spinal cord MRI should be performed in all children with ARM, to allow a correct multidisciplinary follow-up and treatment. In fact, most patients with spinal bone and SCA are asymptomatic, but could develop clinical manifestations during their growth. [ABSTRACT FROM AUTHOR]

Pediatric medical traumatic stress (PMTS) is a psychological and physiological response of children and their families to pain, serious illness, and invasive medical procedures. We aimed to apply the PMTS model to parents of newborns operated at birth for a congenital malformation and to identify clinical and sociodemographic risk factors associated with PMTS symptoms at 6 months. We designed a cross-sectional study to assess PMTS symptoms (avoidance, arousal, reexperiencing) in parents of six months children operated on for a congenital anomaly, with the Italian version of the Impact of Event Scale – Revised (IES-R). One-hundred-seventy parents form the object of the study. Eighty-two parents (48.2%) fell over the clinical cut-off. Ventilatory time (p = 0.0001), length of hospital stay (p = 0.0001), associated anomalies (p = 0.0002), medical devices at discharge (p = 0.0001) and Bayley motor scale (p = 0.0002) were significantly correlated with IES-R Total and Subscale Scores. Multivariate linear regression showed length of hospital stay and number of associated anomalies as significant predictors of IES-R Scores. Regardless the type of anomaly and sociodemographic factors, it is the clinical history of the child which seems to predict the severity of PMTS symptoms in this population of parents. PMTS represents a useful model to describe the psychological reactions of parents of newborns operated at birth for a congenital malformation. NICU and outpatient pediatric staff should be aware of risk factors to identify families who may request early multidisciplinary interventions since the first admission. Prognosis study, level II. [ABSTRACT FROM AUTHOR]

Aim Esophageal atresia (EA) and tracheoesophageal fistula (TEF) consist of a spectrum of rare congenital abnormalities. Although EA surgical treatment is well established, the outcome of EA with proximal fistula (type B and D EA) or isolated H-type fistula (type E EA) is poorly explored. These forms of EA shared a common surgical step: the need of a cervical approach to close the fistula. Therefore, the aim of present study is to evaluate postoperative outcomes of patients treated for Gross type B–D and E EA, on regards of their cervical surgery. Materials and methods A retrospective case series analysis of all patients affected by type B–D and E EA, and admitted to our tertiary care center between January 2003 and December 2014 was performed. All patients underwent preoperative flexible laryngo-tracheobronchoscopy (LTBS) as part of our standardized preoperative diagnostic assessment to define the diagnosis, evaluate preoperative vocal cord motility and to cannulate the fistula when required. Fistula closure was always performed through a right cervical access. Analysis of all cases and comparison between type B–D and E EA were performed. Mann–Whitney test, Chi-squared test and unpaired t test were used as appropriate; p < 0.05 was considered significant. Results During the study period, 180 EA newborns were treated. Proximal or isolated TEF was found in 18 patients (10%): 7 type B, 11 type E EA. Patients affected by type B and E EA/TEF frequently present associated major malformations (27%), and major cardiac abnormalities (44%). Major postoperative complications were: vocal cord paralysis (5 patients), bilateral in 2 infants requiring tracheostomy, cerebral ischemia (1 patient), and cardiac failure (1 patient). Conclusion Patients affected by type B and E EA have a high rate of associated abnormalities, and risk of possible sequelae. Postoperative complications are common, with possible transient vocal cord dismotility, but in some cases persistent paralysis may require tracheostomy. Therefore, both preoperative and postoperative LTBS is highly recommended to evaluate the presence of a proximal fistula, and vocal cord motility, even in asymptomatic patients, to rule out any possible intraoperative “surprise” and any vocal cord abnormality and to possibly define its pathogenesis (congenital vs. iatrogenic). [ABSTRACT FROM AUTHOR]

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. [ABSTRACT FROM AUTHOR]

Background Newborn babies with esophageal atresia/tracheoesophageal fistula (EA/TEF) are prone to respiratory tract disorders. Functional residual capacity (FRC) and lung clearance index (LCI) are commonly considered useful and sensitive tools to investigate lung function and early detecting airways diseases. The aim of the present study is to report the first series of EA/TEF infants prospectively evaluated for FRC and LCI. Methods Prospective observational cohort study of all patients treated for EA/TEF. Lung volume and ventilation inhomogeneity were measured by helium gas dilution technique using an ultrasonic flow meter. Babies were studied both in assisted controlled ventilation (sedated) and in spontaneous breathing (quiet sleep). Three consecutive FRC and LCI measurements were collected for each test at three different time points: before surgery (T0), 24 hours after surgery (T1) and after extubation (T2). Results 16 EA newborns were eligible for the study between December 2011 and July 2013. Three were excluded because of technical problems. At T0 FRC values were in the normal range regardless the presence of TEF but worsened afterwards at T1, with a subsequent recovering after extubation; a significant improvement after surgery was observed concerning LCI while no differences were found in tidal volume. Conclusion Helium gas dilution technique is a suitable method to measure the effect of surgery on lung physiology, even in ventilated infants with EA. The changes observed could be related to the ventilatory management and lung compression during surgical procedure. [ABSTRACT FROM AUTHOR]

Background Near-infrared spectroscopy (NIRS) is a noninvasive technique for monitoring tissue oxygenation and perfusion. The aim of this study was to evaluate cerebral and splanchnic NIRS changes in CDH operated infants enrolled into the VICI trial and therefore randomized for ventilatory modalities. Materials and methods CDH newborns enrolled into the VICI trial (Netherlands Trial Register, NTR 1310) were randomized at birth for high-frequency oscillatory ventilation (HFOV) or conventional mechanical ventilation (CMV) according to the trial. Cerebral oxygenation (rSO 2 C) and splanchnic oxygenation (rSO 2 S) were obtained by NIRS (INVOS 5100; Somanetics, Troy, MI) before and after surgery. Variations in rSO 2 C and rSO 2 S were evaluated. Mann–Whitney test and one-way ANOVA were used as appropriate. p < 0.05 was considered significant. Results Thirteen VICI trial patients underwent surgical repair between March 2011 and December 2012, and were enrolled in the study. Seven patients were assigned to HFOV and six to CMV group respectively. During surgery, a significant reduction in rSO 2 C (p = 0.0001) and rSO 2 S (p = 0.005) were observed. HFOV patients experienced prolonged reduction in rSO 2 C value (p = 0.003) while rSO 2 S did not vary between HFOV and CMV (p = 0.94). Conclusions Surgical CDH repair was associated with decrease of cerebral and splanchnic oxygenation, regardless of ventilation. Patients ventilated by HFOV need a longer time interval to recovery normal rSO 2 C values, than those ventilated by CMV. This may be owing to a different impact of HFOV on patients' hemodynamic status with a higher impairment on total venous return and its negative consequences on cardiac output. [ABSTRACT FROM AUTHOR]

Aim of the study The management of newborns with esophageal atresia (EA) and right aortic arch (RAA) is still an unsolved problem. This study provides a systematic review of epidemiology, diagnosis, management and short-term results of children with EA and RAA. Materials and methods The PubMed database was searched for original studies on children with EA and RAA. In each study, data were extracted for the following outcomes: number of patients, associated anomalies, type of surgical repair, morbidity and mortality rate. Results Eight studies were selected, including 54 patients with EA and RAA. RAA was encountered in 3.6% of infants. Preoperative detection of RAA was reported in 7 of them. In these patients, primary anastomosis was achieved through the right approach in 3 (thoracotomy in 2 and thoracoscopy in 1) while the left approach was the primary choice in 4 (thoracotomy in 2 and thoracoscopy in 2). No significant differences were found between the right and left approaches with regard to leaks (P = 0.89), strictures (P = 1) or mortality (P = 1). In 47/54 patients (87%) RAA was noted during right thoracotomy, and primary anastomosis was achieved through the same approach in 29 (61.7%); conversion to other approaches (left thoracotomy or esophageal substitution) was performed in 15 children (38.3%). No significant differences were found between primary left thoracotomy (LT) and LT after RT with regard to leaks (P = 0.89), strictures (P = 1) or mortality (P = 1). Conclusions Skills and preferences of the surgeon still guide the choice of surgical approach even when preoperatively faced with RAA. A multicenter, prospective randomized study is strongly required. [ABSTRACT FROM AUTHOR]

Introduction Refractory chylothorax is a severe clinical issue, particularly in neonates. Conventional primary approach is based on diet with medium-chain fatty acids and/or total parenteral nutrition. In nonresponders, proposed second line treatments include chemical or surgical pleurodesis, thoracic duct ligation, pleuroperitoneal shunting and pleurectomy but none of these have been shown to be superior to other in terms of resolution rate and safety. Our aim is to report our experience on povidone–iodine use for chemical pleurodesis in newborn infants with chylothorax unresponsive to conservative treatment. Our aim is to report our experience on povidone–iodine use for chemical pleurodesis in newborn infants with chylothorax unresponsive to conservative treatment. Methods Since 2013, povidone–iodine pleurodesis was attempted in all patients with persistent chylothorax who failed conservative treatment (no response to at least 10 days of total parenteral nutrition and maximum dosage of intravenous octreotide). Pleurodesis consisted in the injection of 2 ml/kg of a 4% povidone–iodine solution inside the pleural space, leaving the pleural tube clamped for the subsequent 4 hours. Results Five patients were treated with chemical pleurodesis of persistent chylothorax. Four of 5 patients had their pleural effusion treated by one single povidone–iodine infusion. Median time for resolution was 4 days. A patient with massive superior vena cava thrombosis did not benefit from pleurodesis. None of the patients experienced long term side effects of the treatment. Conclusion Our data suggest that povidone–iodine pleurodesis may be considered a safe and effective option to treat refractory chylothorax in newborns. [ABSTRACT FROM AUTHOR]

Purpose Identify clinical and socio-demographic risk-factors affecting short-term neurodevelopmental outcome (NDO) in children operated on for abdominal and thoracic congenital anomalies (CA). Methods Prospective cohort observational study on newborns operated on for non-cardiac major CA. Evaluations were conducted at 6 and 12 months of age. Univariate linear regression and multivariate regression were conducted to analyze the impact on NDO of clinical and sociodemographic variables. Infants were evaluated with the Bayley Scales of Infant and Toddler Development—3rd Edition. Results One-hundred-fifty-five children were enrolled. They were affected by the following anomalies: Esophageal Atresia (N = 41), Congenital Diaphragmatic Hernia (N = 42), Midgut Malformations (N = 34), Abdominal Wall Defects (N = 18), Colorectal Malformations (N = 20). There were no statistically significant differences among the five groups of CA as to NDO. Variables which reached statistical significance at multivariate regression (p ≤ 0.001) at 6 and 12 months as to cognitive and motor development were: ventilatory time, associated malformations, medical appliances for feeding, number of surgery and length of hospital stay. Conclusions On the average, children born with CA show a NDO within normal range. The identified risk-factors could prompt health care professionals to conduct a close surveillance on most vulnerable children giving them the best chance to reach their full potential. [ABSTRACT FROM AUTHOR]

Background Neurodevelopmental impairment is one of the most significant morbidities among CDH survivors. Purpose Assess correlation between ventilatory time (VT) and short-term neurodevelopmental outcome in congenital diaphragmatic hernia (CDH) survivors. Methods A prospective longitudinal study was conducted between 2008 and 2012. Assessment of mental and motor development was performed at 6 and 12 months by Bayley Scales of Infant and Toddler Development — 3rd Edition (BSID-III). ROC curve analysis was used. Results Forty-two subjects were included in the study. There was a significant inverse correlation between neurodevelopment at 6 and 12 months and VT during first admission (p < 0.0001). VT predicting the risk of moderate (BSID-III < 85) and severe (BSID-III < 70) delay was 13 and 28 days, respectively (area under the curve — delay < 85: 6 months mental 0.943 and motor 0.992; 12 months mental 0.877 and motor 0.925; delay < 70: 6 months mental 0.934 and motor 0.943; 12 months mental 0.906 and motor 0.975; p < 0.0001). Conclusions VT should be considered an important marker to identify subjects at risk for short-term neurodevelopmental delay in CDH survivors. Early follow-up intervention therapy should be activated in every baby with a history exceeding 13 days of VT. [ABSTRACT FROM AUTHOR]

Abstract: Objective: Near infrared spectroscopy (NIRS) gradually became the gold standard to guide anesthetic conduction during cardiac surgery, and nowadays, it is commonly utilized to monitor cerebral oxygenation during invasive procedures. Preterm babies also benefit from this non-invasive monitoring to prevent neurological sequelae. However, few data are available on NIRS perioperative changes in newborn operated on for major non-cardiac malformations. Aim of the present study is to evaluate the usefulness of NIRS assessment during and after esophageal atresia (EA) correction and its correlation with clinical behavior. Patients and Methods: All patients treated for EA from May 2011 were prospectively enrolled in the study. All infants underwent “open” correction of EA and cerebral and splanchnic NIRS was applied up to 48h after surgery. Body temperature, blood pressure, pH, paSO2, paCO2, and urine output, were recorded during NIRS registration. Mann–Whitney test and 1-way ANOVA (Kruskal–Wallis and Dunn’s multiple comparison tests) were used as appropriate. Results: Seventeen patients were enrolled into the study and 13 were available for the analysis. Four patients were excluded because of poor NIRS registration. Cerebral and renal NIRS values significantly decreased at 24h post-operatively (p<0.05). Interestingly, all parameters studied as possible confounders in NIRS remained stable during the study period. Urine output significantly decreased. Conclusion: Our data confirmed that perioperative monitoring of tissue oxygenation during neonatal esophageal surgery is feasible. Cerebral and renal NIRS evaluation, as for cardiac patients, may guide anesthetic conduction and postoperative care. Out data suggest a newly observed hemodynamic reorganization during esophageal surgery involving renal and, probably, splanchnic blood flow redistribution, demonstrated by the observed subsequent significant post-operative transitory decrease in urinary output. Reducing the decrement in cerebral and renal NIRS values may improve, and ideally eliminate, the well-known late sequelae linked to hemodynamic changes during surgery. More studies are needed to better understand the causes of the NIRS described hemodynamic changes and, therefore, correct them. [Copyright &y& Elsevier]

Abstract: Background/purpose: Congenital diaphragmatic hernia (CDH) remains a significant cause of neonatal death. A wide spectrum of disease severity and treatment strategies makes comparisons challenging. The objective of this study was to create a standardized reporting system for CDH. Methods: Data were prospectively collected on all live born infants with CDH from 51 centers in 9 countries. Patients who underwent surgical correction had the diaphragmatic defect size graded (A–D) using a standardized system. Other data known to affect outcome were combined to create a usable staging system. The primary outcome was death or hospital discharge. Results: A total of 1,975 infants were evaluated. A total of 326 infants were not repaired, and all died. Of the remaining 1,649, the defect was scored in 1,638 patients. A small defect (A) had a high survival, while a large defect was much worse. Cardiac defects significantly worsened outcome. We grouped patients into 6 categories based on defect size with an isolated A defect as stage I. A major cardiac anomaly (+) placed the patient in the next higher stage. Applying this, patient survival is 99% for stage I, 96% stage II, 78% stage III, 58% stage IV, 39% stage V, and 0% for non-repair. Conclusions: The size of the diaphragmatic defect and a severe cardiac anomaly are strongly associated with outcome. Standardizing reporting is imperative in determining optimal outcomes and effective therapies for CDH and could serve as a benchmark for prospective trials. [Copyright &y& Elsevier]

Abstract: Introduction: Functional residual capacity (FRC) and lung clearance index (LCI) are sensitive parameters for early detection of airway disease in infancy. The closed helium dilution method has been applied to assess lung volume and ventilation inhomogeneity (VI) in spontaneously breathing infants. Aims: The aims of this study were as follows: (1) to assess applicability of the helium gas dilution technique in mechanically ventilated infants with high-risk congenital diaphragmatic hernia (CDH) and to evaluate changes in breathing patterns, lung volume, and VI during the first days of life before and after surgery, and (2) to analyze the possible correlation between changes in lung volume, cerebral hemodynamics, and oxygenation before and after surgical correction of CDH through near-infrared spectroscopy (NIRS) monitoring. Methods: Lung function tests were performed by multibreath washout traces with an ultrasonic flowmeter and helium gas dilution technique. For all babies, three acceptable FRC and LCI measurements were collected for each test (mean and SD of three measurements were calculated) before surgery (T 0), 24h after surgery (T 1) during mechanical ventilation, and within 24h after extubation in spontaneous breathing (T 2). Cerebral and splanchnic hemodynamics were continuously monitored by NIRS during mechanical ventilation to evaluate relationships between changes in lung volume and capillary–venous oxyhemoglobin saturation in tissues. Fraction of inspired oxygen delivered was adjusted to keep oxygen saturation between 90% and 95%. Results: Thirteen CDH infants were studied; median GA=38weeks (range 35–41) and median BW=3000g (range 1850–3670). FRC and LCI significantly improved after extubation when compared with pre-surgical values. No differences were found in tidal volume (Vt) and NIRS monitoring before and after surgery and after extubation. Neither LCI nor FRC was correlated with NIRS values. Conclusions: Helium gas dilution technique is an applicable and reliable technique to measure lung volumes and ventilation inhomogeneity also in ventilated infants. NIRS is a non-invasive technique to monitor tissue oxygenation during surgery and mechanical ventilation. In CDH newborns these preliminary data show an improvement in both FRC and LCI after extubation. [Copyright &y& Elsevier]

Abstract: Several disorders may present as cystic complex lesions of the fetal thorax, both with benign and malignant behavior. As a consequence, their detection may pose diagnostic, therapeutic, and parental counseling dilemmas. We describe a neonate with a congenital Askin tumor, diagnosed at the 37th week of gestation and treated after birth. Counseling and treatment challenges are discussed. [Copyright &y& Elsevier]

Abstract: Congenital chylous ascites is a rare entity, and surgical treatment is confined to selected intractable cases. We report 2 cases of refractory congenital chylous ascites successfully treated with preoperative administration of lipophilic dye (Sudan III) followed by abdominal systematic surgical exploration, cauterization, and fibrin glue application. [Copyright &y& Elsevier]

Abstract: Background/Purpose: The increased survival rate reached in infants with congenital diaphragmatic hernia (CDH) has shown a concomitant increase in late morbidity. A recent report from CDH Study Group showed that dimension of diaphragmatic defect is the only independent risk factor of mortality. However, the influence of defect size on late morbidity is still controversial. The aim of the study was to evaluate the influence of patch repair (proxy of diaphragmatic defects size) on midterm morbidity. Methods: All high-risk (prenatal diagnosis and/or respiratory symptoms within 6 hours of life) CDH survivors treated at our institution from 2004 to 2008 were followed up in a multidisciplinary outpatient clinic as part of a longitudinal prospective study. Auxological, gastroesophageal, pulmonary, and orthopedic evaluations were performed at 6, 12, and 24 months of age. Patient outcomes were compared with respect to +/− patch repair. Results: Of 70 survivors, 61 (87%) were enrolled and prospectively evaluated in follow-up. Poorer auxological outcome, increased rate of gastroesophageal reflux, and altered pulmonary function test were observed during follow-up. Conclusions: Patch repair correlates with higher pulmonary, auxological, and gastroesophageal morbidity without increasing chest wall deformities at long-term follow-up. [ABSTRACT FROM AUTHOR]

Abstract: Aim of the Study: Infants with congenital diaphragmatic hernia (CDH) are at high risk of sensorineural hearing loss (SNHL). Extracorporeal membrane oxygenation is known to increase this risk, but little is known about other potential causes. We evaluated the impact of several risk factors on SNHL development in CDH survivors not treated with extracorporeal membrane oxygenation. Methods: All high-risk CDH survivors consecutively treated between 1999 and 2005 were included. SNHL was diagnosed based on formal assessment with standard audiologic tests. Patients with and without SNHL were compared for patient-related and treatment-related risk factors. Subsequently, a logistic regression analysis was performed to identify independent risk factors associated with SNHL development. Main Results: Out of 87 CDH survivors, 82 had a formal audiologic evaluation and 40 (49%) had SNHL. Patients with SNHL had significantly lower gestational age (P = .045); higher prevalence of sepsis (P < .001); older age at audiologic examination (P < .001); more episodes of hypocapnia (P = .045); higher prevalence of inhaled nitric oxide use (P = .005); longer mechanical ventilation (P = .009); and longer aminoglycosides (P = .006), furosemide (P = .004), and pancuronium bromide (P = .001) treatments. On logistic regression analysis, the only variable independently associated with the development of SNHL was patient''s age at audiologic follow-up (P = .012). Conclusions: Several risk factors were associated with SNHL development at univariate analysis. After logistic regression, only age at evaluation remained independently associated with SNHL. Routine audiologic follow-up is advocated in all CDH patients. Further studies are needed to define if other (genetic) factors may be involved in the pathogenesis of SNHL in patients with CDH. [Copyright &y& Elsevier]

Abstract: Background/Purpose: Despite surgical refinements, perioperative use of tracheobronchoscopy (TBS) as part of surgical approach to esophageal atresia (EA) is still controversial. The purpose of this study was to evaluate the influence of preoperative TBS in newborns with EA in preventing complications and improving diagnosis and surgical treatment. Methods: In the period ranging from 1997 to 2003, 62 patients with EA underwent preoperative TBS. The procedure was carried out with flexible bronchoscope maintaining spontaneous breathing. When a wide carinal fistula was found, this was mechanically occluded by Fogarty catheter and cannulated with rigid bronchoscopy. Type of EA, surgical procedure variations caused by TBS, and associated anomalies not easily detectable were recorded. Results: Before TBS, the Gross classification of the 62 patients was as follows: type A, 9 patients; type B, none; type C, 51 patients. At TBS, however, 3 of 9 type A patients had an unsuspected proximal fistula (type B). These 3 patients, plus the 2 with H-type fistula, were repaired through a cervical approach. In 4 patients, previously undetected malformations of the respiratory tree (2 aberrant right upper bronchus and 2 hypoplastic bronchi) were found at TBS. Carinal fistulas in 14 type C patients were occluded by Fogarty catheter to improve ventilation during repair. No complications were observed. Overall, TBS was clinically useful in 28 (45.2%) of 62 patients, including 15 (24.2%) of 62 infants in whom it was crucial in modifying the surgical approach. Conclusion: Tracheobronchoscopy is a useful and safe procedure and should be recommended in tertiary centers for babies with EA before surgical repair. [Copyright &y& Elsevier]

Abstract: Background/Purpose: Technical refinements and increasingly sophisticated equipment have led to higher sensitivity in prenatal diagnosis of congenital malformations; however, such progress may be accompanied by decreased specificity. The aim of this study is to evaluate evolution of prenatal diagnosis from the first sonographic suspicion of fetal anomaly until after delivery (diagnosis confirmed, resolution before birth, healthy baby, or affected with different disorder) to document rate of false-positive (FP) results. Methods: Retrospective review of prenatal ultrasound examinations performed at our institution between 2000 and 2002 was conducted. The series includes pregnancies referred to our department after detection of thoracic and abdominal anomalies at routine obstetrical sonography and with a follow-up comprising at least the first 6 months of life. Urologic malformations were excluded. Those fetuses who proved healthy at birth were considered FP results. Results: One hundred fifty-seven fetuses/neonates underwent complete follow-up. Prenatal diagnosis of esophageal atresia resulted in 3 (27%) of 11 FPs. Finding of dilated bowel, isolated or associated with hyperechogenicity or ascites, was not predictive of small bowel obstruction in 7 (41%) of 17 fetuses. No FPs were found with regard to abdominal wall defects (8 gastroschisis and 26 omphaloceles, all confirmed at birth). Concerning thoracic malformations, no FPs were seen among the 28 cases of congenital diaphragmatic hernia, whereas diagnosis of lung malformation presented a specificity of 97% (1/28 FP). Ovarian cysts accounted for an FP rate of 17% (4/23 FPs). Overall, a percentage of FP of 12% (6/50) was seen in 2000, of 11% (5/44) in 2001, and 9% (6/63) in 2002, with no statistically significant difference. Conclusions: Because of the high FP rate regarding some particular anomalies, unnecessary psychological burden to prospective parents may ensue. This issue should be dealt with in future prospective studies. [Copyright &y& Elsevier]

Abstract: Background: Short bowel syndrome (SBS) is a severe malabsorption caused by bowel loss. Congenital intestinal anomalies (CIA) detectable by prenatal ultrasound as jejunoileal atresia, meconium peritonitis, complicated meconium ileus, and fetal volvulus can be responsible for SBS. Aims: This study aims to investigate either frequency of SBS or the morbidity in CIA population during the first admission. Material and methods: Records of CIA treated from 1997 to 2003 were reviewed. The prenatal ultrasound findings were correlated with SBS. Student''s t and χ 2 tests were performed to analyze epidemiological data, growth at discharge, sepsis, liver disease, catheter-related complications, motor developmental delay, and hospital stay in CIA with and without SBS. Results: Forty-four CIA: SBS developed in 43%, ranging from 83% in volvulus to 0% in complicated meconium ileus. Thirty-six prenatal diagnoses: a strong correlation with SBS was observed in isolated dilated bowel (58%). In SBS neonates, birth weight, gestational age, and growth at discharge were statistically lower, whereas sepsis, motor delay, and hospital stay were statistically higher. Conclusions: Many neonates with CIA detectable by prenatal ultrasound develop SBS. Short bowel syndrome presents a significant higher morbidity. The counseling should stress the frequent association between CIA and SBS as well as the significant morbidity in SBS. [Copyright &y& Elsevier]

Abstract: Background and Purpose: Prenatal corticosteroids have been used in fetuses with congenital diaphragmatic hernia (CDH). We tested the utility of steroids by 2 methods. Methods: Mothers carrying fetuses with CDH were randomized to 3 weekly doses of betamethasone or placebo starting at 34 weeks. Patients were followed until death or discharge. In a separate cohort study, the CDH Registry was used to compare infants who received prenatal steroids to those who had not. Results: Thirty-four patients were enrolled at 7 centers, with 32 completing the trial. There were 15 placebo and 17 steroid patients. There was no difference in survival, length of stay, duration of ventilation, or oxygen use at 30 days. For the cohort study, we looked at infants older than 34 weeks who were born after October 2000 when data on prenatal steroids were collected. There were 1093 patients; 390 were evaluable, with 56 receiving steroids. There was no difference in survival, length of stay, ventilator days, or oxygen use at 30 days. Conclusion: Neither the trial nor the CDH Registry suggest that late prenatal corticosteroids benefit fetuses with CDH. More than 1700 mothers and fetuses would need to be enrolled in a trial to show a 10% improvement in survival. It is unlikely that late steroids offer benefit to most fetuses with CDH. [Copyright &y& Elsevier]

Abstract: Background: Despite improvements in clinical management, mortality of congenital diaphragmatic hernia (CDH) remains high. Early prediction of mortality risk helps in comparing strategies and/or performances of different centers. Birth weight (BW), Apgar Score at 5 minutes, and modified McGoon Index (MGI) calculated by the ratio between the diameters of pulmonary arteries and the descending aorta have been used to determine mortality of CDH. Aim: The purpose of this study is to evaluate the relationship between early detectable variables and survival in newborns with CDH intubated at birth, managed with “gentle” ventilation and delayed surgery. Methods: All medical records of patients affected by high-risk CDH and treated with a standardized protocol at Bambino Gesù Children''s Hospital, Rome, Italy, between January 2002 and September 2004 were reviewed. Prenatal diagnosis, gestational age, BW, sex, side of hernia, and MGI were recorded on admission. The relationship with mortality of each variable was evaluated by univariate analysis. Subsequently, a predictive model of mortality was developed using a logistic regression: the explanatory variables, BW, and MGI were dichotomized in high (HBW and HMGI) and low (LBW and LMGI) according to the best cutoff found with receiver-operating characteristic curves. Results: Thirty-four newborns with CDH, treated with a standardized protocol, were studied. The main characteristics of the 34 patients were BW, 2886 g (1500-3620 g); gestational age, 37.7 weeks (32-42 weeks); male/female, 22/12; right/left, 8/26; prenatal diagnosis, 29; MGI, 1.31 (0.9-1.85). Only BW and MGI were significantly (P < .05) associated with mortality at the univariate analysis. The best cutoff values were 2755 g for BW (sensitivity, 70%; specificity, 74%) and 1.25 for MGI (sensitivity, 73%; specificity, 78%). Using these limits, BW and MGI resulted independently associated with mortality in the multivariate analysis. Using the 4 possible combinations, the LBW associated with the LMGI presented the highest prediction of mortality (80%). Conclusions: Birth weight and MGI, variously combined, were predictive of mortality. Because they are not influenced by subsequent modalities of care, they can be considered as valid early severity scores in CDH and used for comparing strategies and/or performances of different centers. [Copyright &y& Elsevier]

Abstract: Background: Cardiorespiratory stabilization is recommended before surgical repair of congenital diaphragmatic hernia (CDH) because surgery may induce a transitory deterioration of chest compliance and gas exchange. It is not known if surgical intervention can affect cerebral circulation and oxygenation. Aim: The aim of the study was to assess noninvasively, by near-infrared spectroscopy, the possible changes in cerebral hemodynamics and oxygenation associated with surgical repair of CDH. Subjects: Twenty-five newborns with severe CDH (birth weight, 3057 ± 354 g; gestational age, 37.8 ± 1.8 weeks; male/female newborns, 15/10; left/right CDH, 19/6) were sedated, paralyzed, and mechanically ventilated by conventional gentle ventilation and surgically corrected at a median age of 2.7 days (min-max, 2-14 days) after cardiorespiratory stabilization. Methods: Heart rate (HR [beats per minute]), preductal transcutaneous oxygen saturation (tcSao 2 [%]), carbon dioxide tension (tcPco 2 [Torr]), and mean arterial blood pressure (mm Hg) were continuously monitored. Inspired fractional oxygen concentration (Fio 2) was adjusted to maintain and preductal tcSao 2 of greater than 80%, whereas the ventilator''s settings were kept unchanged throughout the surgical procedure. Cerebral hemodynamics was assessed by near-infrared spectroscopy (NIRO 300, Hamamatsu Photonics, Japan), recording continuously and noninvasively the relative changes in concentration of oxygenated (ΔO2Hb [μmol/L]), deoxygenated (ΔHHb [μmol/L]), and total (ΔtHb [μmol/L]) hemoglobin; the tissue oxygenation index (TOI [%]) was also calculated (TOI = O2Hb/O2Hb + HHb). Total hemoglobin concentration is considered to be representative of cerebral blood volume. Arterial blood gases were also measured at the beginning (T 1) and at the end of surgery (T 2). For all measurements, results at T 1 and at T 2, as well as the differences between T 1 and T 2, have been expressed as means or medians and SDs or 95% confidence intervals or ranges. The differences between T 1 and T 2 were considered statistically significant for a P value of less than .05 by the Student t test for paired values. Results: At T 1, mean tcSao 2% was 94.1 % (SD, 4.6) with a Fio 2 of 0.25 (SD, 0.1); at T 2, to obtain similar values of tcSao 2 (93.4%; SD, 4.4), it was necessary to increase the Fio 2 to 0.37 (SD, 0.14; P < .001). Mean HR at T 1 was 149.5 beats per minute (SD, 9.1) and increased significantly (P < .05) at T 2 (165.2 beats per minute; SD, 14.2). Mean arterial blood pressure was 54.7 mm Hg (SD, 7.7) at T 1 and did not change appreciably at T 2 (55.6 mm Hg; SD, 8.1). Moreover, tcPco 2 did not change significantly during the procedure (mean tcPco 2 = 49.9 Torr [SD, 12.8] at T 1 and 57.3 mm Hg [SD, 17.9] at T 2). O2Hb and tHb decreased (P < .001 and <.005) and HHb increased (P < .05) significantly during the surgical procedure (mean Δ [SD]: ΔO2Hb= −10.9 μmol/L [9.7], ΔtHb = −7.5 μmol/L [11.7], and ΔHHb = −3.5 μmol/L [6.8]). Mean TOI was 70% at T 1 (normal values >60%) and decreased significantly at T 2 (mean ΔTOI = −6.1% [SD, 10.6]). In all infants, the greatest changes occurred when the viscera were positioned into the abdomen. Conclusions: Notwithstanding the initial cardiorespiratory stabilization, surgical repair of CDH was associated with a rise in HR and oxygen requirement and a drop in cerebral tHb and O2Hb, suggesting a reduction in cerebral blood volume and oxygenation. These events were probably due to the combined effects of an increase in right to left shunting (as indicated by the increased oxygen requirement) and a decrease in venous return (possibly due to compression of the inferior vena cava by the viscera positioned into the abdomen). These preliminary results reinforce the importance of achieving a good cardiorespiratory stability before undertaking surgical correction of CDH to minimize the possible interference of the procedure with cerebral circulation and oxygenation. [Copyright &y& Elsevier]

Abstract: A case report of a neonate with pulmonary arteriovenous malformation is described. The anomaly was prenatally diagnosed, and family history was positive for Rendu-Osler-Weber syndrome. Because neurologic symptoms developed during the second week of life, surgical resection was deemed the best curative option to avoid further embolic events and reoccurrence of the lesion. Previous reports detailing coil embolization therapy for pulmonary arteriovenous malformation are discussed. [Copyright &y& Elsevier]

Abstract: In a newborn with severe respiratory failure and abnormal elevation of the right diaphragm, congenital diaphragmatic hernia with sac was diagnosed during surgery. However, microscopic examination of the sac showed atrophic striated muscle cells, indicating eventration instead of hernia. After several extubation failures, the final diagnosis of nemaline myopathy was made by skeletal muscle biopsy. In diaphragmatic defects with sac, diaphragm microscopic analysis should be recommended in order to discriminate between hernia and eventration. Congenital myopathies may underlie such diaphragmatic defects and should be promptly recognized, given their prognostic implications. [Copyright &y& Elsevier]

Background and Aims: Anastomotic ulceration (AU) is a rare potential life-threatening complication that may occur after intestinal resection. The diagnosis is often delayed after a long-lasting history of refractory anemia. The pathogenesis remains unknown and there are no established therapies. The aim of the study was to analyze the medical history of children with short bowel syndrome (SBS) who were experiencing AU., Methods: Records of SBS children were retrospectively reviewed. Demographics, baseline characteristics, presentation, diagnosis and treatment of AU cases were analyzed., Results: Eight out of 114 children with SBS were identified as having AU. Mean gestational age was 32.5weeks. Underlying diseases were: 5 necrotising enterocolitis, 2 gastroschisis and 1 multiple intestinal atresia. The mean age at AU diagnosis was 6.5years (diagnosis delay of 35months). All but 2 patients had AU persistency after medical treatment. Endoscopic treatment (2 argon plasma coagulation; 1 platelet-rich fibrin instillation; 2 endoscopic hydrostatic dilations) was effective in 3 out of 5 children. Surgery was required in 3 patients., Conclusions: Severe bowel ischemic injury, especially in preterm infant, could predispose to AU development. Medical treatment showed discouraging results. We firstly described that different endoscopic treatment could be attempted before resorting to further surgery., Level of Evidence: IV., (Copyright © 2017 Elsevier Inc. All rights reserved.)

Purpose: The aim of our study was to elucidate if the defect size reflects the magnitude of the developmental defect in patients with CDH., Methods: All patients recorded in the CDH Study Group registry between January 1, 2007, and December 31, 2010, and with defect classification were included in the study. They were divided according to defect size (A-D) and compared for: gestational age (GA), birth weight (BW), number of abnormal organ systems, prevalence of associated anomalies, cardiovascular malformations (CVM), chromosomal anomalies, liver in the chest, and hernia sac., Results: A total of 1350 of 1778 patients had defect classification: 173 A, 557 B, 438 C, and 182 D. Mortality rate was 0.6%, 5.3%, 22.6%, and 45.6% in group A, B, C, and D, respectively, (p<0.0001; p for trend <0.0001). GA, BW, prevalence of associated anomalies, particularly CVM, number of abnormal organ systems, and prevalence of sac were significantly different between the groups, with a significant reduction of GA, BW, and prevalence of sac. There was an increase in prevalence of associated anomalies, liver in the chest, and number of abnormal systems as the defect size increased., Conclusion: Defect size is directly correlated with mortality rate, prevalence of other anomalies (particularly CVM), and number of abnormal systems, and inversely with GA, BW, and prevalence of hernia sac. The defect size may be a marker for the magnitude of developmental abnormality, thereby explaining its relationship with the outcome., (Copyright © 2013 Elsevier Inc. All rights reserved.)

Background: Long-term follow-up of sacrococcygeal teratoma (SCT) is well established; however, little is known about the effects of extensive surgery in the pelvic and perineal region, which involves disruption of muscles providing maximal support in normal walking., Methods: Thirteen patients operated on at birth for SCT with extensive muscle dissection underwent gait studies with a Vicon 3-D motion analysis system with 6 cameras. Results were compared with 15 age-matched controls. Statistical analysis was performed with Mann-Whitney test; correlations were sought with Spearman's correlation coefficient., Results: All subjects were independent ambulators, and no statistically significant differences were seen in walking velocity and stride length. However, in all patients, toe-off occurred earlier (at 58% +/- 1.82% of stride length) than controls (at 65.5% +/- 0.52%; P <.05). On kinetics, all patients exhibited, on both limbs, a significant reduction of hip extensory moment (-0.11 +/- 0.11 left; -0.16 +/- 0.15 right v 1.19 +/- 0.08 Newtonmeter/kg; P <.05) and of ankle dorsi/plantar moment (-0.07 +/- 0.09 right; -0.08 +/- 0.16 v -0.15 +/- 0.05 Nm/kg, p < 0.05). Knee power was also significantly reduced (0.44 +/- 0.55 right, 0.63 +/- 0.45 left v 0.04 +/- 0.05 W/kg), whereas ankle power was increased (3 +/- 1.5 right; 2.8 +/- 0.9 left v 1.97 +/- 0.2 W/kg; P <.05). No statistically significant correlation was found between tumor size and either muscle power generation or flexory/extensory moments., Conclusions: Patients operated on for SCT exhibit nearly normal gait patterns. However, this normal pattern is accompanied by abnormal kinetics of some ambulatory muscles, and the extent of these abnormalities appears to be independent of tumor size. A careful follow-up is warranted to verify if such modifications are stable or progress over the years, thereby impairing ambulatory potential or leading to early arthrosis.

Purpose: The aim of this study was to assess parent's emotional and cognitive reactions to the prenatal diagnosis of diaphragmatic hernia in their prospective children., Methods: A survey was conducted by means of a questionnaire. In the period ranging from 1997 to 2002, 40 couples in whom an established diagnosis of diaphragmatic hernia was made in their fetus were seen for prenatal consultation at a tertiary referral center., Results: Overall response rate was 93% (37 couples). Mean period since diagnosis for compilation of the questionnaire was 2 weeks. Mean gestational age at diagnosis was 25 weeks (range, 16 to 35 weeks). All parents lacked prediagnostic knowledge of diaphragmatic hernia and consider a single consultation with the paediatric surgeon inadequate to have a clear understanding of the anomaly. Only 1 mother and 1 father reported they understood all the information given by the surgeon. The most frequent (75%) feeling during and after the consultation was fear. Most parents (70%) referred to the intense emotions as the factor that made it difficult to follow the surgeon's explanations as well as to ask questions., Conclusions: Because of the incompatibility of emotional distress and optimum learning, impairment of early comprehension of information about diaphragmatic hernia is unavoidable. Therefore, we believe that follow-up antenatal consultations and provision of written and visual illustration are extremely important to facilitate informed choices.

Background/purpose: Ovarian torsion causing the loss of an ovary represents the most common complication of fetal ovarian cysts and occurs more frequently before than after birth. Thus, treatment of fetal simple ovarian cysts should be performed antenatally; however, criteria for prenatal decompression still need to be evaluated. Previous experience of the authors showed that large simple cysts have a poor outcome, whereas preliminary attempts of their "in utero" aspiration were all successful and uneventful. The authors evaluated the outcome of fetal simple ovarian cysts after prenatal aspiration and considered criteria for this procedure. The outcome of cysts showing a prenatal ultrasound pattern of torsion also was studied., Methods: This prospective study includes 73 ovarian cysts (48 simple, 25 showing torsion) diagnosed in 72 fetuses from June 1992 to June 1999, and followed up until spontaneous resolution or surgery. Prenatal aspiration was performed in the case of simple cysts >/=5 cm in diameter. The outcome of these cysts was compared with that of similar cysts not aspirated in the authors previous study (X(2). Cysts with an US pattern of torsion persisting at birth were operated on. The outcome of simple cysts less than 5 cm and cysts with a prenatal ultrasound appearance of torsion also was evaluated., Results: Prenatal decompression was performed without any complications in 14 cases: 12 (86%; 95% CI: 0.68 to 1.00) regressed subsequently; 2 (14%; 95% CI: 0.00 to 0.32) showed torsion postnatally. This outcome is significantly better than that of similar cysts not aspirated in the authors' previous study(10) (P =.0002). Among the 34 simple cysts less than 5 cm, 26 (76%; 95% CI: 0.62 to 0.90) resolved spontaneously; 8 (24%; 95% CI: 0.10 to 0.38) had complications, 7 of which showing torsion (diameter at evidence of torsion, 4.4 cm [median]; range, 3.3 to 5.2 cm). Among the 34 cysts showing torsion (25 with initial US pattern of torsion + 9 subsequently complicated simple cysts), 24 (71%; 95% CI: 0.56 to 0.86) required oophorectomy; 9 (26%; 95% CI: 0.11 to 0.41) spontaneously disappeared at ultrasound, one of which required surgery for intestinal obstruction secondary to adhesion of a necrotic ovary; one patient (3%; 95% CI: 0.00 to 0.09) was lost to follow-up., Conclusions: Prenatal aspiration of ovarian cysts appears effective and safe: a "cutoff" of 4 cm should be investigated. Cysts with ultrasound pattern of torsion persisting postnatally require surgery; options for their management, when sonographically disappearing and asymptomatic, need to be investigated., (Copyright 2002 by W.B. Saunders Company.)