[Outpatient surgery for penile hypospadias in pediatric urology: A monocentric experience with a mean follow-up of 3 years]. / Chirurgie ambulatoire de l'hypospade pénien pédiatrique : expérience monocentrique avec un recul moyen de 3 ans.

INTRODUCTION: Hypospadias is one of the most common congenital anomalies in men. Outpatient surgery has been proposed but is not widespread. The aim of this study was to evaluate our experience of outpatient surgery for penile hypospadias repair and to specify the constraints for a result similar to a conventional inpatient procedure. PATIENTS AND METHODS: Observational, retrospective and single-center study, including all the patients operated on hypospadias for the first time by one of the 3 senior surgeons, between January 2011 and March 2018. Peno-scrotal and perineal hypospadias were excluded because systematically hospitalized. RESULTS: One hundred sixty-six patients were included. 67 patients (40,4%) were treated on an outpatient basis. The mean age at the time of procedure was 15.6 (6-51) months. Forms with curvature were almost exclusively hospitalized (1 vs. 25, P<0.001). There was no significant difference for anterior penile forms (60 vs. 81, P=0.06). Middle and posterior hypospadias were more often hospitalized, although outpatient experience exists. There were no more complications in the outpatient group. CONCLUSION: Outpatient hypospadias surgery seems to be achievable in most of the cases, provided that medical care is standardized and multidisciplinary, the staff is trained and involved and a specific organization is put in place in the department. Evaluation of the socio-family environment is therefore fundamental.

Multicystic and diffuse malignant peritoneal mesothelioma in children.

BACKGROUND: Malignant and multicystic peritoneal mesotheliomas are extremely rare tumors in children, developing from mesothelial cells. No specific guidelines are available at this age. METHODS: We performed a retrospective analysis of all identified children (< 18-year-old) treated in France from 1987 to 2017 for a diffuse malignant peritoneal mesothelioma (DMPM) or a multicystic peritoneal mesothelioma (MCPM). RESULTS: Fourteen patients (5 males and nine females), aged 2.2 to 17.5 years, were included. The most frequent presenting symptoms were abdominal pain, ascitis, and alteration in the general condition. Eight patients had epithelioid mesothelioma, three had biphasic mesothelioma, and three had MCPM. Eight patients with DMPM diagnosis received cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC). Among them, six patients had neoadjuvant systemic chemotherapy, one patient, post-operative chemotherapy, and one patient CRS and HIPEC only. Three patients received only systemic chemotherapy. All patients with MCPM had only surgery. After a median follow-up of seven years (2-15), six patients (6/11; one death) with DMPM and two patients (two/three) with MCPM had a local and distant recurrences. CONCLUSION: Peritoneal mesothelioma in children is a rare condition with difficult diagnosis and high risk of recurrence. Worldwide interdisciplinary collaboration and networking are mandatory to help diagnosis and provide harmonious treatment guidelines.

Predictors of the Performance of Early Antireflux Surgery in Esophageal Atresia.

OBJECTIVE: To identify predictors of and factors associated with the performance of antireflux surgery during the first year of life in children born with esophageal atresia. STUDY DESIGN: All patients were included in a French registry for esophageal atresia. All 38 multidisciplinary French centers completed questionnaires about perinatal characteristics and one-year outcome for children born with esophageal atresia. RESULTS: Of 835 infants with esophageal atresia born in France from 2010 to 2014, 682 patients, excluding those with long-gap esophageal atresia, were included. Three patients had type I, 669 had type III, and 10 had type IV esophageal atresia. Fifty-three children (7.8%) received fundoplication during the first year of life. The median age at the time of the end-to-end esophageal anastomosis was 1.1 day (range 0-15). Multivariate analysis identified three perioperative factors that predicted the need for early antireflux surgery: anastomotic tension (P = .004), associated malformations (P = .019), and low birth weight (P = .018). Six other factors, measured during the first year of life, were associated with the need for antireflux surgery: gastroesophageal reflux (P < .001), anastomotic stricture (P < .001), gastrostomy (P < .001), acute life-threatening event (P = .002), respiratory complications (P = .045), and poor nutritional status (P < .001). CONCLUSIONS: Gastroesophageal reflux disease, low birth weight, poor nutrition, and surgical anastomosis difficulties predicted the performance of antireflux surgery in the first year of life in infants with esophageal atresia.

Renal parenchyma impairment characterization in partial unilateral ureteral obstruction in mice with intravoxel incoherent motion-MRI.

Ureteropelvic junction obstruction constitutes a major cause of progressive pediatric renal disease. The biological mechanisms underlying the renal response to obstruction can be investigated using a clinically relevant mouse model of partial unilateral ureteral obstruction (pUUO). Renal function and kidney morphology data can be evaluated using renal ultrasound, scintigraphy and uro-magnetic resonance imaging (uro-MRI), but these methods are poorly linked to histological change and not all are quantitative. Here, we propose to investigate pUUO for the first time using an intravoxel incoherent motion diffusion sequence. The aim of this study was to quantitatively characterize impairment of the kidney parenchyma in the pUUO model. This quantitative MRI method was able to assess the perfusion and microstructure of the kidney without requiring the injection of a contrast agent. The results suggest that a perfusion fraction (f) reduction is associated with a decrease in the volume of the renal parenchyma, which could be related to decreased renal vascularization. The latter may occur before impairment by fibrosis and the findings are in accordance with the literature using the UUO mice model and, more specifically, on pUUO. Further investigation is required before this technique can be made available for the diagnosis and management of children with antenatal hydronephrosis and to select the optimal timing of surgery if required.

Morphometric Analysis of the Umbilicus According to Age.

BACKGROUND: Morphometric and anatomical analyses of the shape and position of the umbilicus have been conducted in adults, but umbilicoplasty in children remains challenging because growth is still occurring. OBJECTIVES: The main objective of this study was to evaluate the difference in the position and shape of the umbilicus between childhood and adulthood. The secondary objective was to improve the surgical management of umbilicoplasty in children. METHODS: This prospective single-center study focused on the morphometric analysis of the umbilicus in 200 adults and children. All data, including standardized measures and pictures, were determined by one single operator. RESULTS: Despite a variation of approximately 2% in the xiphoid-pubis distance, the location of the umbilicus remains stable during the entire growth period. In a supine individual, the location is at one half to two thirds of the xiphoid-pubis distance (slightly lower in children), with a mean ratio of 0.57 for the xiphoid-umbilicus distance to the xiphoid-pubis distance. In the general population, the most common shapes are round and vertical oval. T-shaped umbilici were only observed in adults. Round and protruding shapes were twice as frequent in children under 18 as in adults. The horizontal oval shape was twice as frequent in adults. CONCLUSIONS: Abdominal growth and changes in the repartition of subcutaneous adipose tissues with age are responsible for the vertical orientation and deepening of the umbilicus as well as its horizontal orientation. To promote final cosmetic outcomes, secondary umbilicoplasty must place the umbilicus between one half and two thirds of the xiphoid-pubis distance.

A pure familial 6q15q21 split duplication associated with obesity and transmitted with partial reduction.

Familial transmission of chromosome 6 duplications is rare. We report on the first observation of a maternally-inherited pure segmental 6q duplication split into two segments, 6q15q16.3 and 6q16.3q21, and associated with obesity. Obesity has previously been correlated to chromosome 6 q-arm deletion but has not yet been assessed in duplications. The aim of this study was to characterize the structure of these intrachromosomal insertional translocations by classic cytogenetic banding, array-CGH, FISH, M-banding and genotyping using microsatellites and SNP array analysis, in a mother and four offspring. The duplicated 6q segments, 9.75 Mb (dup 1) and 7.05 Mb (dup 2) in size in the mother, were inserted distally into two distinct chromosome 6q regions. They were transmitted to four offspring. A son and a daughter inherited the two unbalanced insertions and displayed, like the mother, an abnormal phenotype with facial dysmorphism, intellectual disability, and morbid obesity. Curiously, two daughters with a normal phenotype inherited only the smaller segment, 6q16.3q21. The abnormal phenotype was associated with the larger proximal 6q15q16.3 duplication. We hypothesize a mechanism for this exceptional phenomenon of recurrent reduction and transmission of the duplication during meiosis in a family. We expect the interpretation of our findings to be useful for genetic counseling and for understanding the mechanisms underlying these large segmental 6q duplications and their evolution.

Case reports of large and symptomatic abdominal tumors in newborns: Pitfalls, difficulties in management, and surgical decision making.

BACKGROUND: Large and rapidly growing abdominal tumors may result in fatal outcomes in newborns. In some cases, a rapidly worsening clinical condition requires surgical decision-making despite the absence of a precise histological diagnosis. In these situations, there is neither a guide nor consensus. CASE: We highlight our experience with five patients with large abdominal tumors and assess the available literature for the best possible management of a rare condition. CONCLUSION: In these cases, laparostomy should be considered as a life-saving procedure. If the liver is involved and coagulopathy is present, prognosis is often compromised.

Laparoscopic gastropexy for the treatment of gastric volvulus associated with wandering spleen.

A 2.5-year-old boy was referred to the emergency room for a sudden onset of diffuse and increasing abdominal pain with lethargy, abdominal distension, and vomiting, all in the past 24 hours. A plain abdominal X-ray showed gastric distension. Two liters of gastric contents were evacuated by suction. The abdominal sonogram showed an unusual position of the spleen in the left-lower quadrant, with no splenic ischemia. The diagnosis of gastric volvulus associated with a wandering spleen was then evoked. Laparoscopic exploration revealed a nonischemic spleen, absence of normal supporting ligaments for the spleen, and gastric distension with flaccid gastric walls. The spleen was then easily moved in the left-under quadrant. A parietal peritoneal posterolateral incision was made, opposite the large gastric curve, up to the diaphragm (7 cm). This delimitated a sharp demarcation zone between the two edges of the incised peritoneum. The stomach was fixed to the peritoneal incision, covering and anchoring the spleen in a good position. Recovery was uneventful, and an abdominal sonogram performed 4 years after the surgery shows a viable spleen in its correct location. The rarity of gastric volvulus associated with a wandering spleen and its fast clinical improvement with medical treatment often delays the diagnosis and the surgical treatment. Laparoscopy in this case has a dual relevance: diagnosis and therapeutic management (splenectomy or gastropexy). Laparoscopic gastropexy for the treatment of gastric volvulus associated with a wandering spleen is an easy procedure and combines the advantages of all the surgical techniques previously described.

Monitoring Cerebral and Renal Oxygenation Status during Neonatal Digestive Surgeries Using Near Infrared Spectroscopy.

BACKGROUND: Depending on the initial pathology, hypovolemia, intra-abdominal hypertension, and sepsis are often encountered in neonatal digestive surgery. Accurate newborn monitoring during and after surgery is essential to adapt resuscitation protocols. Near infrared spectroscopy (NIRS) is non-invasive and can detect hypoperfusion which indicates a low circulatory blood flow, regardless of the cause. OBJECTIVE: Evaluating changes in cerebral and renal regional oxygen saturation during neonatal digestive surgeries, conducted according to normal practices, with commonly used monitoring parameters. Analyzing retrospectively the inter-relationships between NIRS values and mean arterial pressure (MAP) values as well as pre-ductal SpO2. METHODS: Prospective, descriptive, monocentric study. All neonates referred for surgery were included. NIRS allows the measurement of cerebral and renal oxygenation fluctuations, as well as calculating difference in intraoperative and postoperative values. RESULTS: Nineteen patients were included. Cerebral regional oxygen saturation (C rSO2) values were stable while renal regional oxygen saturation (R rSO2) values tended to decrease with time during surgery. Indeed, 72% of rSO2 decline episodes occurred after the first 30 min of surgery, without any significant statistical differences for the next 90 min of surgery. After surgery, the lowest average C and R rSO2 values were evidenced during the first 6 h, with 60% of C rSO2 and R rSO2 anomalies occurring in that time frame. There was no significant statistical difference observed in the following 18 h. There was a significant correlation between R rSO2 and SpO2 values (p < 0.01), but not with C rSO2 values. There was no correlation with the MAP either for the C rSO2 values or R rSO2 ones. CONCLUSION: NIRS is a promising non-invasive bedside tool to monitor cerebral and tissue perfusion, analyzing tissue microcirculation. NIRS has its interest to guide neonatal digestive surgeries (bowel manipulation, viscera reduction) and may represent an early warning for identifying patients requiring resuscitation during or after these surgeries.

Mast Cells and MCPT4 Chymase Promote Renal Impairment after Partial Ureteral Obstruction.

Obstructive nephropathy constitutes a major cause of pediatric renal progressive disease. The mechanisms leading to disease progression are still poorly understood. Kidney fibrotic lesions are reproduced using a model of partial unilateral ureteral obstruction (pUUO) in newborn mice. Based on data showing significant mast cell (MC) infiltration in patients, we investigated the role of MC and murine MCPT4, a MC-released chymase, in pUUO using MC- (Wsh/sh), MCPT4-deficient (Mcpt4-/-), and wild-type (WT) mice. Measurement of kidney length and volume by magnetic resonance imaging (MRI) as well as postmortem kidney weight revealed hypotrophy of operated right kidneys (RKs) and compensatory hypertrophy of left kidneys. Differences between kidneys were major for WT, minimal for Wsh/sh, and intermediate for Mcpt4-/- mice. Fibrosis development was focal and increased only in WT-obstructed kidneys. No differences were noticed for local inflammatory responses, but serum CCL2 was significantly higher in WT versus Mcpt4-/- and Wsh/sh mice. Alpha-smooth muscle actin (αSMA) expression, a marker of epithelial-mesenchymal transition (EMT), was high in WT, minimal for Wsh/sh, and intermediate for Mcpt4-/- RK. Supernatants of activated MC induced αSMA in co-culture experiments with proximal tubular epithelial cells. Our results support a role of MC in EMT and parenchyma lesions after pUUO involving, at least partly, MCPT4 chymase. They confirm the importance of morphologic impairment evaluation by MRI in pUUO.

[Ureteral multiplicity: report of 3 cases]. / Multiplicité urétérale: à propos de 3 cas.

The ureteric multiplicity is a rare malformation with about one hundred cases described in the literature. The rarity of this anomaly and the complexity of possible associated anomalies often make the preoperative diagnosis difficult. The authors report 1 case of partial quadruplicate ureter associated with bladder duplication and 2 cases of triplicate ureter, corresponding to types I, II and III of Smith's classification. Based on their experience and a review of the literature, they discuss the diagnostic approach and treatment of these anomalies.

[Ureteral valves: report of 3 cases]. / Valves urétérales: à propos de 3 cas.

Ureteric valves are a rare cause of upper urinary tract obstruction. The authors report 3 cases of ureteric valves: one discovered incidentally during assessment of abdominal trauma and two cases detected by antenatal ultrasound. The diagnosis of ureteric valves was suggested by urography in two cases and was confirmed by immediate preoperative retrograde ureteropyelography in all three cases. The three patients were treated by ureteric resection-anastomosis with a favourable outcome in each case. Based on a review of the literature, the authors discuss the diagnostic modalities and management of ureteric valves. They also discuss the embryological hypotheses concerning the formation of ureteric valves.

Botulinum toxin injections in the management of non-neurogenic overactive bladders in children.

INTRODUCTION: Non-neurogenic detrusor overactivity in children leads to varying degrees of functional impairments (urinary urgency, pollakiuria, urge incontinence, nocturia). Botulinum toxin has shown its effectiveness in the management of detrusor overactivity in neurological patients. OBJECTIVES: To evaluate the relevance of intravesical Botulinum toxin injections for the treatment of non-neurogenic overactive bladders in children. These pediatric patients were resistant to all the usual therapeutics (e.g. bladder/bowel rehabilitation, anticholinergic drugs, management of diet/hygiene habits and constipation, percutaneous posterior tibial nerve stimulation). MATERIALS AND METHODS: 8 children (mean age: 12.5years), 5 girls, 3 boys with daytime and/or nighttime incontinence and non-neurogenic detrusor overactivity validated by urodynamic testing. Urodynamic testing was conducted before the injections as well as 6weeks and 1year post injections. We used Dysport® 8 Speywood Units/kg injected via cystoscopy into 25 different sites. RESULTS: We noted improvements without any complaints during bladder voiding for all patients, in 6 patients the overactivity disappeared after 1 injection. Compliance was improved early-on in half the cases and at 1year for all cases (from 12% to 61%, p=0.01). Noninhibited contractions decreased constantly in both frequency and intensity. Clinical symptoms improved: mean of 7.75 daytime urinary incontinence episodes (IE) per week before the injection vs. 3 after the procedure (p=0.04). For nighttime IE the improvement was even more noticeable with 7.38 nighttime IE episodes per week before the injection vs. 2.06 after the procedure (p=0,02). CONCLUSION: Intradetrusor Botulinum toxin injections are a potential therapeutic option for the management of non-neurogenic detrusor overactivity in children resistant to the usual treatments.

Results from the French National Esophageal Atresia register: one-year outcome.

BACKGROUND: The aim of the present national prospective population-based study was to assess the early morbidity of esophageal atresia (EA). METHODS: All 38 multidisciplinary French centers that care for patients with EA returned a specific questionnaire about the 1-year outcome for each patient. This information was centralized, checked, and entered into a database. RESULTS: From the total population of 307 EA patients born in 2008 and 2009, data about the 1-year outcome were obtained from 301 (98%) patients, of whom 4% were lost to follow-up and 5% died. Medical complications occurred in 34% of the patients: anastomotic leaks (8%), recurrent tracheoesophageal fistula (4%), and anastomotic stenosis (22%); all of the latter group needed dilation (median, 2 dilations/patient). A new hospitalization was required for 59% of patients (2.5 hospitalizations/patient) for digestive (52%) or respiratory (48%) reasons. Twelve percent of patients required antireflux surgery at a median age of 164 days (range, 33-398 days), and 1% underwent an aortopexy for severe tracheomalacia. The weight/age Z-score was -0.8 (range, -5.5 to 3.7 months) at 12 months. Fifteen percent of patients were undernourished at 12 months of age, whereas 37% presented with respiratory symptoms and 15% had dysphagia at the last follow-up. Significant independent factors associated with medical complications were anastomotic esophageal tension (p = .0009) and presence of a gastrostomy (p = .0002); exclusive oral feeding at discharge was associated with a decreased risk of complications (p = .007). CONCLUSIONS: Digestive and respiratory morbidities remain frequent during the first year of life and are associated with difficult anastomosis and lack of full oral feeding.

Cleft palate and bilateral congenital cataract: a familial observation: a new syndrome?

We report a family with a rare association of congenital bilateral cataract and cleft palate that has not to our knowledge been previously reported. The lineage has unveiled abnormalities over four generations affecting 21 people with congenital bilateral cataract, with or without cleft palate. The transmission seems autosomal dominant. Four brothers and sisters presented with this defect, and a fifth sister is healthy. The mother has facial dimorphism, congenital bilateral cataract, submucous cleft palate, clinodactyly, and scoliosis. The propositus' karyotype was normal. Array comparative genomic hybridisation (CGH) analysis showed an interstitial amplification in Xp21.1, found in the mother, in all the affected siblings but one, and in the healthy girl. Thisl association is not rare and has been reported in over 50 syndromes but rarely in familial observations. Based on the genetic-clinical discordance we wonder about the deleterious impact of the Xp21.1 amplification that might be a copy number polymorphism.

Wandering spleen in children: multicenter retrospective study.

Wandering spleen in children is a rare condition. The diagnosis is difficult, and any delay can cause splenic ischemia. An epidemiologic, semiological, and surgical diagnosis questionnaire on incidence of wandering spleen in children was sent to several French surgical teams. We report the results of this multicenter retrospective study. Fourteen cases (6 girls, 8 boys) were reported between 1984 and 2009; the age range varies between 1-day-old and 15 years; 86% were seen in the emergency department. Ninety-three percent had diffuse abdominal pain. For 57% of the cases, it was their first symptomatic episode of this type. No diagnosis was established based on the clinical results alone. All patients had presurgical imaging diagnosis. Open surgery was performed on 64% cases. Forty-three had splenectomy for splenic ischemia. Thirty-six percent had splenopexy, 14% had laparoscopic gastropexy, and 7% had spleen repositioning and regeneration. Complications were noted in 60% of the cases resulting in postsplenopexy splenic ischemia. Early diagnosis and surgery are the best guarantee for spleen preservation. Even if the choice of one technique, splenopexy or gastropexy, can be argued, gastropexy has the advantage of avoiding splenic manipulation and restoring proper physiologic anatomy. When there is no history of abdominal surgery, laparoscopy surgery seems the best procedure.