Estudio comparativo del control cistoscópico vs control radiológico para el tratamiento endoscópico del megauréter obstructivo primario / Comparative study of cystoscopic control vs. radiological control in the endoscopic treatment of primary obstructive megaurater

Objetivo: La dilatación neumática con balón de alta presión para el tratamiento del megauréter obstructivo primario (MOP) fue descrita inicialmente bajo control cistoscópico y radioscópico. Sin embargo, algunos grupos utilizan únicamente el control cistoscópico, con la intención de evitar la radiación ionizante asociada al procedimiento. Material y métodos: Estudio retrospectivo que incluye los MOP tratados mediante dilatación neumática en nuestro servicio entre 2008 y 2021. Comparamos tasa de éxito, complicaciones y seguimiento entre dos grupos: dilatación bajo control cistoscópico exclusivo (CS) vs control radioscópico exclusivo (RX). Resultados: Intervenimos 23 pacientes: 9 CS y 14 RX. Ambos grupos fueron demográficamente comparables. La estancia media hospitalaria fue significativamente menor en el grupo CS (1 vs 2 días; p0,009). El tiempo quirúrgico fue mayor en el grupo RX (78 vs 30 min; p0,001). La dilatación de la unión vesicoureteral (UVU) fue satisfactoria 100% CS vs 79% RX: RR 3,87 (0,51-26,99). Las complicaciones postoperatorias fueron similares para ambos grupos, RR 3,87 (0,51-26,99). La migración del catéter doble J ocurrió en un caso en ambos grupos: RR 0,64 (0,05-9,03). A largo plazo, la tasa de éxito del tratamiento fue mayor para el grupo CS (100% vS 71%); RR 3,87 (0,51-26,99). Conclusión: La dilatación neumática del MOP bajo control cistoscópico exclusivo es más rápida de realizar, sin aumentar por ello el riesgo de complicaciones. Basándonos en nuestra experiencia, proponemos eliminar la radiación ionizante a los pacientes durante el procedimiento, ya que la consideramos innecesaria.(AU)

Objective: High-pressure balloon pneumatic dilatation for the treatment of primary obstructive megaureter (POM) was initially described under cystoscopic and radiological control. However, some groups use cystoscopic control only, in an attempt to avoid the ionizing radiation associated with the procedure. Materials and methods: A retrospective study of POM patients treated with pneumatic dilatation in our unit from 2008 to 2021 was carried out. Success rates, complications, and follow-up were compared between two groups –dilatation under cystoscopic control alone (CS) vs. dilatation under radiological control only (RX). Results: 23 patients –9 CS and 14 RX– underwent surgery. Both groups were demographically comparable. Mean hospital stay was significantly shorter in the CS group (1 vs. 2 days; p = 0.009). Operating time was longer in the RX group (78 vs. 30 min; p = 0.001). Ureterovesical junction (UVJ) dilatation was successful in 100% of CS vs. 79% of RX cases; RR: 3.87 (0.51-26.99). Postoperative complications were similar in both groups; RR: 3.87 (0.51-26.99). Double J stent migration occurred in one case in both groups; RR: 0.64 (0.05-9.03). In the long-term, treatment success rate was higher in the CS group (100% vs. 71%); RR: 3.87 (0.51-26.99). Conclusion: POM pneumatic dilatation under cystoscopic control alone is faster, without increasing the risk of complications. Based on our experience, we suggest ionizing radiation be removed, since we consider it to be unnecessary.(AU)

Comparative study of cystoscopic control vs. radiological control in the endoscopic treatment of primary obstructive megaurater. / Estudio comparativo del control cistoscópico vs control radiológico para el tratamiento endoscópico del megauréter obstructivo primario.

OBJECTIVE: High-pressure balloon pneumatic dilatation for the treatment of primary obstructive megaureter (POM) was initially described under cystoscopic and radiological control. However, some groups use cystoscopic control only, in an attempt to avoid the ionizing radiation associated with the procedure. MATERIALS AND METHODS: A retrospective study of POM patients treated with pneumatic dilatation in our unit from 2008 to 2021 was carried out. Success rates, complications, and follow-up were compared between two groups -dilatation under cystoscopic control alone (CS) vs. dilatation under radiological control only (RX). RESULTS: 23 patients -9 CS and 14 RX- underwent surgery. Both groups were demographically comparable. Mean hospital stay was significantly shorter in the CS group (1 vs. 2 days; p = 0.009). Operating time was longer in the RX group (78 vs. 30 min; p = 0.001). Ureterovesical junction (UVJ) dilatation was successful in 100% of CS vs. 79% of RX cases; RR: 3.87 (0.51-26.99). Postoperative complications were similar in both groups; RR: 3.87 (0.51-26.99). Double J stent migration occurred in one case in both groups; RR: 0.64 (0.05-9.03). In the long-term, treatment success rate was higher in the CS group (100% vs. 71%); RR: 3.87 (0.51-26.99). CONCLUSION: POM pneumatic dilatation under cystoscopic control alone is faster, without increasing the risk of complications. Based on our experience, we suggest ionizing radiation be removed, since we consider it to be unnecessary.

OBJETIVO: La dilatación neumática con balón de alta presión para el tratamiento del megauréter obstructivo primario (MOP) fue descrita inicialmente bajo control cistoscópico y radioscópico. Sin embargo, algunos grupos utilizan únicamente el control cistoscópico, con la intención de evitar la radiación ionizante asociada al procedimiento. MATERIAL Y METODOS: Estudio retrospectivo que incluye los MOP tratados mediante dilatación neumática en nuestro servicio entre 2008 y 2021. Comparamos tasa de éxito, complicaciones y seguimiento entre dos grupos: dilatación bajo control cistoscópico exclusivo (CS) vs control radioscópico exclusivo (RX). RESULTADOS: Intervenimos 23 pacientes: 9 CS y 14 RX. Ambos grupos fueron demográficamente comparables. La estancia media hospitalaria fue significativamente menor en el grupo CS (1 vs 2 días; p 0,009). El tiempo quirúrgico fue mayor en el grupo RX (78 vs 30 min; p 0,001). La dilatación de la unión vesicoureteral (UVU) fue satisfactoria 100% CS vs 79% RX: RR 3,87 (0,51-26,99). Las complicaciones postoperatorias fueron similares para ambos grupos, RR 3,87 (0,51-26,99). La migración del catéter doble J ocurrió en un caso en ambos grupos: RR 0,64 (0,05-9,03). A largo plazo, la tasa de éxito del tratamiento fue mayor para el grupo CS (100% vS 71%); RR 3,87 (0,51-26,99). CONCLUSION: La dilatación neumática del MOP bajo control cistoscópico exclusivo es más rápida de realizar, sin aumentar por ello el riesgo de complicaciones. Basándonos en nuestra experiencia, proponemos eliminar la radiación ionizante a los pacientes durante el procedimiento, ya que la consideramos innecesaria.

Congenital malformations of the urinary tract: progression to chronic renal disease. / Malformaciones congénitas del tracto urinario (CAKUT): evolución a enfermedad renal crónica.

INTRODUCTION: Congenital nephrourological abnormalities (CAKUT) are a particularly relevant group of diseases due to their high prevalence and the fact they are the main cause of chronic renal disease (CRD) in the pediatric population. Our objective was to determine the characteristics and prevalence of CAKUT in our setting, while identifying the factors associated with the occurrence of renal damage. MATERIALS AND METHODS: A retrospective, descriptive, analytical, cross-sectional study of patients seen in the Pediatric Nephrology Department of a third-level hospital from January 1 to December 31, 2018 was carried out. Epidemiological, clinical, and analytical variables were assessed, and potential risk factors associated with CRD were searched for. RESULTS: The study involved 685 patients with 827 kidney units affected by CAKUT with a mean age of 9.98 ± 5.12 years. 62.2% were male, and the mean follow-up period after diagnosis was 9.95 ± 5.09 years. 58.8% were non-obstructive dilations, followed by renal dysplasia, obstructive dilations, and number and position abnormalities. The most frequent malformation was vesicoureteral reflux (VUR). The most commonly affected side was the left (47.5%). 55% of the diagnoses were prenatal. 172 patients underwent surgery. The initially chosen treatment for VUR was endourological. Overall re-intervention rate was 20%. Of the total number of patients, glomerular filtration rate was analyzed in 383, 95 (24.8%) of whom had CRD (86% in stage 2). Male sex, bilaterality, and proteinuria were risk factors associated with CRD. CONCLUSIONS: Knowledge of the epidemiological and clinical characteristics of children with CAKUT and the factors associated with CRD helps to individualize the clinical follow-up of these patients, thus customizing diagnostic tests and healthcare resources.

INTRODUCCION: Las anomalías nefrourológicas congénitas (CAKUT), constituyen un grupo de enfermedades de gran relevancia por su alta prevalencia y por ser la principal causa de enfermedad renal crónica (ERC) en la población pediátrica. Nuestro objetivo es conocer las características y la prevalencia de CAKUT en nuestro medio, identificando los factores asociados a la aparición de daño renal. MATERIAL Y METODOS: Estudio retrospectivo, descriptivo, analítico y transversal, que incluyó los pacientes atendidos en la consulta de Nefrología Pediátrica de un hospital de tercer nivel desde el 1 de enero al 31 de diciembre de 2018. Se analizaron variables epidemiológicas, clínicas y analíticas, y se buscaron posibles factores de riesgo asociados a ERC. RESULTADOS: Se incluyeron 685 pacientes con 827 unidades renales con CAKUT con una edad media de 9,98 ± 5,12 años. El 62,2% fueron varones y el seguimiento medio desde el diagnóstico fue de 9,95 ± 5,09 años. El 58,8% fueron dilataciones no obstructivas, seguido por displasia renal, dilataciones obstructivas y anomalías de número y posición. La malformación más frecuente fue el reflujo vesicoureteral (RVU). El lado más afectado fue el izquierdo (47,5%). El 55% de los diagnósticos fueron prenatales. Fueron intervenidos 172 pacientes. El tratamiento inicial de elección en el RVU fue endourológico. La tasa de reintervención global alcanzó el 20%. Del total de pacientes, se pudo analizar el filtrado glomerular en 383 pacientes, de los cuales 95 (24,8%) tenían ERC (86% en estadio 2). El sexo masculino, la bilateralidad y la proteinuria fueron factores de riesgo asociados a la ERC. CONCLUSIONES: El conocimiento de las características epidemiológicas y clínicas de los niños con CAKUT y de los factores asociados a la ERC ayuda a individualizar el seguimiento clínico de estos pacientes adecuando las pruebas diagnósticas y los recursos sanitarios.

Malformaciones congénitas del tracto urinario(CAKUT): evolución a enfermedad renal crónica / Congenital malformations of the urinary tract: progression to chronic renal disease

Introducción: Las anomalías nefrourológicas congénitas (CAKUT),constituyen un grupo de enfermedades de gran relevancia por su altaprevalencia y por ser la principal causa de enfermedad renal crónica(ERC) en la población pediátrica. Nuestro objetivo es conocer las ca-racterísticas y la prevalencia de CAKUT en nuestro medio, identificandolos factores asociados a la aparición de daño renal. Material y métodos: Estudio retrospectivo, descriptivo, analíticoy transversal, que incluyó los pacientes atendidos en la consulta deNefrología Pediátrica de un hospital de tercer nivel desde el 1 de eneroal 31 de diciembre de 2018. Se analizaron variables epidemiológicas,clínicas y analíticas, y se buscaron posibles factores de riesgo aso-ciados a ERC.Resultados: Se incluyeron 685 pacientes con 827 unidades rena-les con CAKUT con una edad media de 9,98 ± 5,12 años. El 62,2%fueron varones y el seguimiento medio desde el diagnóstico fue de9,95 ± 5,09 años. El 58,8% fueron dilataciones no obstructivas, se-guido por displasia renal, dilataciones obstructivas y anomalías denúmero y posición. La malformación más frecuente fue el reflujovesicoureteral (RVU). El lado más afectado fue el izquierdo (47,5%).El 55% de los diagnósticos fueron prenatales. Fueron intervenidos172 pacientes. El tratamiento inicial de elección en el RVU fue en-dourológico. La tasa de reintervención global alcanzó el 20%. Deltotal de pacientes, se pudo analizar el filtrado glomerular en 383pacientes, de los cuales 95 (24,8%) tenían ERC (86% en estadio 2).El sexo masculino, la bilateralidad y la proteinuria fueron factoresde riesgo asociados a la ERC. Conclusiones: El conocimiento de las características epidemioló-gicas y clínicas de los niños con CAKUT y de los factores asociados ala ERC ayuda a individualizar el seguimiento clínico de estos pacientesadecuando las pruebas diagnósticas y los recursos sanitarios.(AU)

Introduction: Congenital nephrourological abnormalities (CAKUT)are a particularly relevant group of diseases due to their high prevalenceand the fact they are the main cause of chronic renal disease (CRD) in thepediatric population. Our objective was to determine the characteristicsand prevalence of CAKUT in our setting, while identifying the factorsassociated with the occurrence of renal damage. Materials and methods: A retrospective, descriptive, analytical, cross-sectional study of patients seen in the Pediatric NephrologyDepartment of a third-level hospital from January 1 to December 31,2018 was carried out. Epidemiological, clinical, and analytical variables were assessed, and potential risk factors associated with CRDwere searched for.Results: The study involved 685 patients with 827 kidney unitsaffected by CAKUT with a mean age of 9.98 ± 5.12 years. 62.2% weremale, and the mean follow-up period after diagnosis was 9.95 ± 5.09years. 58.8% were non-obstructive dilations, followed by renal dysplasia,obstructive dilations, and number and position abnormalities. The mostfrequent malformation was vesicoureteral reflux (VUR). The most commonly affected side was the left (47.5%). 55% of the diagnoses wereprenatal. 172 patients underwent surgery. The initially chosen treatmentfor VUR was endourological. Overall re-intervention rate was 20%. Ofthe total number of patients, glomerular filtration rate was analyzed in383, 95 (24.8%) of whom had CRD (86% in stage 2). Male sex, bilateral ity, and proteinuria were risk factors associated with CRD. Conclusions: Knowledge of the epidemiological and clinical characteristics of children with CAKUT and the factors associated withCRD helps to individualize the clinical follow-up of these patients, thuscustomizing diagnostic tests and healthcare resources.(AU)

Tratamiento endourológico del muñón ureteral sintomático posnefrectomía / Endourological treatment of symptomatic ureteral stump posnephrectomy

Introducción: El síndrome del muñón ureteral se define como una infección urinaria recurrente, dolor abdominal bajo y hematuria en pacientes con antecedentes de nefrectomía previa. Su incidencia es baja y su sintomatología, inespecífica. El objetivo de nuestro trabajo es presentar nuestros resultados con el tratamiento endoscópico de los restos ureterales sintomáticos. Material y métodos: Realizamos un estudio retrospectivo de los pacientes que presentaban síndrome de resto ureteral tras nefrectomía y que han sido tratados en nuestro centro entre los años 2004 y 2015. Presentamos una serie de 10 pacientes. Los pacientes fueron tratados endoscópicamente con electrofulguración del uréter y de los bordes del meato afectado, con posterior inyección de material de relleno a nivel submucoso subureteral para favorecer la coaptación de las paredes del resto ureteral. Resultados: La media de edad al tratamiento fue de 2 años. El resto ureteral afectado fue derecho en 6 pacientes y en 4 fue el lado izquierdo. Siete meatos fueron ectópicos y 3, ortotópicos. El tiempo de seguimiento fue de 8 años. Tras el tratamiento endoscópico solo 2 pacientes recidivaron. Conclusión: El tratamiento endourológico del síndrome del muñón ureteral supone una opción simple, segura, rápida, ambulante y eficaz, tanto para restos ortotópicos como ectópicos. No compromete, si fuera necesaria, la posterior resección abierta del resto ureteral, por lo que creemos que debe considerarse como una alternativa válida para el tratamiento inicial de esta patología

Introduction: ureteral stump syndrome is defined as a recurrent urinary infection, low abdominal pain and haematuria in patients with a history of nephrectomy. Its incidence is low and the symptoms are non-specific. The aim of our paper was to present our results with endoscopic treatment of symptomatic ureteral remnants. Material and methods: We performed a retrospective study of patients with ureteral remnant syndrome after nephrectomy treated in our centre between 2004 and 2015. We present a series of 10 patients. The patients were treated endoscopically with electrofulguration of the ureter and edges of the affected meatus, with subsequent injection of filler material into the suburetheral submucosa to aid in the coaptation of the ureteral remnant walls. Results: The mean age at treatment was 2 years. The right ureteral remnant was treated in 6 patients and the left in 4. Seven meatuses were ectopic and 3 orthotopic. Follow-up was 8 years. After endoscopic treatment only 2 patients relapsed. Conclusion: Endourological treatment of ureteral stump syndrome is a simple, safe, rapid and effective option that can be performed as an outpatient, for orthotopic and ectopic stumps. It does not compromise subsequent open resection of the ureteral remnant if required, and therefore we believe that it should be considered a valid alternative for the initial treatment of this disorder

Endourological treatment of symptomatic ureteral stump posnephrectomy. / Tratamiento endourológico del muñón ureteral sintomático posnefrectomía.

INTRODUCTION: ureteral stump syndrome is defined as a recurrent urinary infection, low abdominal pain and haematuria in patients with a history of nephrectomy. Its incidence is low and the symptoms are non-specific. The aim of our paper was to present our results with endoscopic treatment of symptomatic ureteral remnants. MATERIAL AND METHODS: We performed a retrospective study of patients with ureteral remnant syndrome after nephrectomy treated in our centre between 2004 and 2015. We present a series of 10 patients. The patients were treated endoscopically with electrofulguration of the ureter and edges of the affected meatus, with subsequent injection of filler material into the suburetheral submucosa to aid in the coaptation of the ureteral remnant walls. RESULTS: The mean age at treatment was 2 years. The right ureteral remnant was treated in 6 patients and the left in 4. Seven meatuses were ectopic and 3 orthotopic. Follow-up was 8 years. After endoscopic treatment only 2patients relapsed. CONCLUSION: Endourological treatment of ureteral stump syndrome is a simple, safe, rapid and effective option that can be performed as an outpatient, for orthotopic and ectopic stumps. It does not compromise subsequent open resection of the ureteral remnant if required, and therefore we believe that it should be considered a valid alternative for the initial treatment of this disorder.

Tratamiento endoscópico del reflujo uretrodeferencial en niños / Endoscopic treatment of urethrodeferential reflux in children

Introducción: El reflujo uretrodeferencial es una entidad infradiagnosticada, no existiendo consenso en su tratamiento. Nuestro objetivo es mostrar nuestra experiencia en el tratamiento mínimamente invasivo de esta dolencia mediante tratamiento endoscópico. Material y métodos: Presentamos 8 pacientes con orquitis supuradas de repetición por reflujo uretrodeferencial tratados de forma endoscópica en el período de 2008-2013. Todos presentaron orquitis unilaterales. El número mínimo de orquitis por paciente anterior a la intervención fue de 3. El tratamiento endoscópico consistía en una uretroscopia con localización de los orificios eyaculatorios y un estudio de contraste intraoperatorio para demostrar el reflujo uretrodeferencial. Posteriormente se inyectó ácido hialurónico/dextranómero subeyaculatorio en todos los casos. Resultados: El tiempo medio de la cirugía fue de 15 min, siendo un procedimiento ambulante en todos los pacientes. No hubo complicaciones postoperatorias. Los pacientes presentaron buena evolución clínica. Solo un caso requirió el uso de una segunda inyección de ácido hialurónico/dextranómero. El seguimiento de estos pacientes mostró la resolución completa de los cuadros de epididimitis y un buen desarrollo testicular, con un seguimiento mayor de 4 años en todos los casos. Conclusión: Proponemos esta forma de tratamiento como una alternativa poco invasiva, fácilmente reproducible y que ha presentado buenos resultados a largo plazo en nuestra pequeña serie de pacientes

Introduction: Urethrodeferential reflux is an underdiagnosed condition, and there is no consensus on its treatment. Our objective is to show our experience in the minimally invasive treatment of this disease using endoscopy. Material and methods: We present 8 patients with recurrent suppurative orchitis due to urethrodeferential reflux treated endoscopically during the period 2008-2013. All patients presented unilateral orchitis. The minimum number of episodes of orchitis per patient prior to the operation was 3. The endoscopic treatment consists of ureteroscopy, locating the ejaculatory orifices and conducting an intraoperative contrast study to demonstrate the urethrodeferential reflux. Subejaculatory dextranomer/hyaluronic acid was subsequently injected in all the cases. Results: The mean surgical time was 15min, and the procedure was outpatient for all patients. There were no postoperative complications, and the patients had good clinical progression. Only one case required a second injection of dextranomer/hyaluronic acid. The follow-up of these patients showed a complete resolution of the epididymitis and good testicular development, with a follow-up longer than 4 years in all cases. Conclusion: We propose this form of treatment as a minimally invasive, easily reproducible alternative that shows good long-term results in our small series of patients

Endoscopic treatment of urethrodeferential reflux in children. / Tratamiento endoscópico del reflujo uretrodeferencial en niños.

INTRODUCTION: Urethrodeferential reflux is an underdiagnosed condition, and there is no consensus on its treatment. Our objective is to show our experience in the minimally invasive treatment of this disease using endoscopy. MATERIAL AND METHODS: We present 8 patients with recurrent suppurative orchitis due to urethrodeferential reflux treated endoscopically during the period 2008-2013. All patients presented unilateral orchitis. The minimum number of episodes of orchitis per patient prior to the operation was 3. The endoscopic treatment consists of ureteroscopy, locating the ejaculatory orifices and conducting an intraoperative contrast study to demonstrate the urethrodeferential reflux. Subejaculatory dextranomer/hyaluronic acid was subsequently injected in all the cases. RESULTS: The mean surgical time was 15min, and the procedure was outpatient for all patients. There were no postoperative complications, and the patients had good clinical progression. Only one case required a second injection of dextranomer/hyaluronic acid. The follow-up of these patients showed a complete resolution of the epididymitis and good testicular development, with a follow-up longer than 4 years in all cases. CONCLUSION: We propose this form of treatment as a minimally invasive, easily reproducible alternative that shows good long-term results in our small series of patients.

Papel de la laparoscopia en prematuros con sospecha de enterocolitis necrotizante / Role of laparoscopy in premature infants with suspicion of necrotizing enterocolitis

Introducción. La indicación quirúrgica en la enterocolitis necrotizante(ECN) puede ser difícil en ausencia de neumoperitoneo o peritonitis secundaria. Proponemos la laparoscopia para realizar un diagnóstico precoz de perforaciones o necrosis intestinal y evitar laparotomías “en blanco”. Material y métodos. Se planteó un protocolo diagnóstico terapéutico que incluyera la laparoscopia en los casos de ECN de indicación quirúrgica incierta. Posteriormente se realizó un estudio prospectivo de los 7 pacientes en los que se realizó laparoscopia, analizando efectos fisiopatológicos en el prematuro, dificultades técnicas del procedimiento, congruencia diagnóstica y evolución postoperatoria. Resultados. La edad gestacional media al nacimiento fue de 27semanas (rango 25 a 31) con un peso medio de 1,147 kg (rango 0,900 a1,600). Se colocaron dos trócares orientados según la focalidad de la exploración o la radiología, aplicando un neumoperitoneo de 6-10 mm Hg durante una media de 17 min. La laparoscopia evitó la laparotomía en un paciente, que evolucionó bien tras lavado y drenaje; y magnificólas lesiones en otro paciente que, tras la laparotomía, no precisó derivación intestinal. En el resto de los casos la laparoscopia permitió una minilaparotomía orientada a las lesiones y derivación intestinal. No se produjo ninguna complicación quirúrgica atribuible al procedimiento, que fue bien tolerado en todos los casos. Conclusiones. La laparoscopia puede ser una herramienta útil para valoración de las lesiones de ECN en los casos de indicación quirúrgica incierta. En nuestra experiencia es bien tolerada en el neonato de bajo peso, permitiendo orientar el tratamiento quirúrgico e, incluso, evitarla laparotomía (AU)

Introduction. The indication of surgery in necrotizing enterocolitis(NEC) can be difficult in the absence of pneumoperitoneum or peritonitis. We propose laparoscopy for early diagnosis of intestinal perforation or necrosis in order to avoid unneccessary laparotomies. Material and methods. A new protocol was proposed which included diagnostic and therapeutic laparoscopy in cases of uncertain surgical ECN indication. Subsequently, a prospective study of the 7 patients who underwent laparoscopy was performed, analyzing pathophysiological effects in the premature, technical difficulties of the procedure, and postoperative diagnostic consistency. Results. The mean gestational age at birth was 27 weeks (range 25 to31) with an average weight of 1.147 kg (range 0.900 to 1.600) two trocars were placed as the focal oriented scanning or radiography, using a pneumoperitoneum6-10 mmHg for an average of 17 min. Laparoscopy avoided laparotomy in a patient who did well after washing and drainage and magnified lesions in one patient who did not require laparotomy after intestinal bypass. In other cases, laparoscopy was followed by minilaparotomy oriented to the lesions and stoma formation. There were no surgical complications attributable to the procedure, which was well tolerated in all cases. Conclusions. Laparoscopy can be a useful tool for evaluation of lesions of NEC in cases of uncertain surgical indications. In our experience ,it is well tolerated in neonates of low weight, allowing oriented minilaparotomies or even to avoid laparotomy (AU)

[Role of laparoscopy in premature infants with suspicion of necrotizing enterocolitis]. / Papel de la laparoscopia en prematuros con sospecha de enterocolitis necrotizante.

INTRODUCTION: The indication of surgery in necrotizing enterocolitis (NEC) can be difficult in the absence of pneumoperitoneum or peritonitis. We propose laparoscopy for early diagnosis of intestinal perforation or necrosis in order to avoid unneccessary laparotomies. MATERIAL AND METHODS: A new protocol was proposed which included diagnostic and therapeutic laparoscopy in cases of uncertain surgical ECN indication. Subsequently, a prospective study of the 7 patients who underwent laparoscopy was performed, analyzing pathophysiological effects in the premature, technical difficulties of the procedure, and postoperative diagnostic consistency. RESULTS: The mean gestational age at birth was 27 weeks (range 25 to 31) with an average weight of 1.147 kg (range 0.900 to 1.600) two trocars were placed as the focal oriented scanning or radiography, using a pneumoperitoneum 6-10 mmHg for an average of 17 min. Laparoscopy avoided laparotomy in a patient who did well after washing and drainage and magnified lesions in one patient who did not require laparotomy after intestinal bypass. In other cases, laparoscopy was followed by minilaparotomy oriented to the lesions and stoma formation. There were no surgical complications attributable to the procedure, which was well tolerated in all cases. CONCLUSIONS: Laparoscopy can be a useful tool for evaluation of lesions of NEC in cases of uncertain surgical indications. In our experience, it is well tolerated in neonates of low weight, allowing oriented minilaparotomies or even to avoid laparotomy.

[Is stridor a banal symptom in infants?]. / Es el estridor un síntoma banal en el lactante?

OBJECTIVES: To analyze the causes of stridor in infancy and its treatment. MATERIAL AND METHODS: Ninety patients under 1 year of age with stridor (93.06 +/- 82.4 days) were included. All patients were diagnosed by fiberoptic bronchoscopy. RESULTS: Thirty-eight patients were referred from the pediatric and neonatal intensive care units, 23 from an outpatient clinic and 29 from other hospitals. Diagnoses were subglottic stenosis in 21 patients, tracheobronchomalacia in 20, laryngomalacia in 20, tracheal stenosis in 17, cervical hemolymphangiomas in five, vocal cord palsies in four, and glottic edema in three. Forty-six patients (51.1 %) required surgery: 14 for functional disorders and 32 for anatomical anomalies. Six patients required further surgery: five with subglottic stenosis and one with tracheal stenosis. Outcome was very good or good in 75 patients (83.4 %) and was fair or poor in eight (8.8 %). Seven patients (7.8 %) died. Causes of death were an associated congenital heart disease in four patients, sepsis in one, bronchopneumonia in one, and suture dehiscence in an anterior cartilage graft tracheoplasty in one. CONCLUSION. According to our results, fiberoptic bronchoscopy should be performed in infants with stridor, as an underlying anomaly requiring surgical treatment is frequently found. The severity of stridor does not always correlate with the severity of the lesion. Potentially lethal causes can be found, requiring early treatment.

¿Es el estridor un síntoma banal en el lactante? / Is stridor a banal symptom in infants?

Objetivos. Analizar las causas de estridor en lactantes y qué tratamientos precisan. Material y métodos. Un total de 90 pacientes menores de un año con estridor (93,06 ± 82,4 días). Todos los pacientes fueron diagnosticados mediante fibrobroncoscopia. Resultados. Un total de 33 pacientes provenían de las unidades de cuidados intensivos (UCI) pediátrica o neonatológica, 22 de la consulta de cirugía/pediatría y 26 de otros centros. Los diagnósticos fueron: 21 casos estenosis subglótica, 20 traqueobroncomalacia, 20 laringomalacias, 16 estenosis traqueales, cinco hemangiolinfangiomas cervicales, cuatro parálisis de cuerda vocal y tres edema de glotis. Requirieron tratamiento quirúrgico 46 casos (51,1 %): 14 por patologías funcionales y 32 por alteraciones anatómicas. Necesitaron reintervención 6 casos: cinco estenosis subglóticas y uno estenosis traqueal. El resultado fue bueno o muy bueno en 75 pacientes (83,4 %) y regular o malo en 8 pacientes (8,8 %). Fallecieron 7 pacientes (7,8 %), cuatro de ellos a causa de su cardiopatía congénita asociada, uno por sepsis fulminante, uno por neumonía y uno por dehiscencia de sutura en traqueoplastia anterior. Conclusión. Según nuestros resultados, debería valorarse el estudio mediante fibrobroncoscopia en aquellos lactantes con estridor, ya que puede subyacer patología que requerirá tratamiento quirúrgico. La gravedad del estridor no siempre se correlaciona con la de la lesión. Existe patología potencialmente letal que requerirá un tratamiento precoz

Objectives. To analyze the causes of stridor in infancy and its treatment. Material and methods. Ninety patients under 1 year of age with stridor (93.06 ± 82.4 days) were included. All patients were diagnosed by fiberoptic bronchoscopy. Results. Thirty-eight patients were referred from the pediatric and neonatal intensive care units, 23 from an outpatient clinic and 29 from other hospitals. Diagnoses were subglottic stenosis in 21 patients, tracheobronchomalacia in 20, laryngomalacia in 20, tracheal stenosis in 17, cervical hemolymphangiomas in five, vocal cord palsies in four, and glottic edema in three. Forty-six patients (51.1 %) required surgery: 14 for functional disorders and 32 for anatomical anomalies. Six patients required further surgery: five with subglottic stenosis and one with tracheal stenosis. Outcome was very good or good in 75 patients (83.4 %) and was fair or poor in eight (8.8 %). Seven patients (7.8 %) died. Causes of death were an associated congenital heart disease in four patients, sepsis in one, bronchopneumonia in one, and suture dehiscence in an anterior cartilage graft tracheoplasty in one. Conclusion. According to our results, fiberoptic bronchoscopy should be performed in infants with stridor, as an underlying anomaly requiring surgical treatment is frequently found. The severity of stridor does not always correlate with the severity of the lesion. Potentially lethal causes can be found, requiring early treatment

[Management endourologic of pyeloureteral junction stenosis]. / Tratamiento endourológico de la estenosis pieloureteral congénita.

OBJECTIVES: To report our experience with endourologic methods in the treatment of pyeloureteral stenosis in children. MATERIALS AND METHODS: From July 2004, 7 patients from 9 months to 15 years old with pyeloureteral junction stenosis (PUJ) diagnosis underwent endourologic repair. An endourological dilatation was made under radioscopic control. The procedures consist of an initial cystoscopy with a retrograde placement of catheter (4 or 5 Fr) and the guide wire (0,014''-or 0,035''). The high pressure balloon (3 to 5 Fr) was then railroad over the wire and positioned across the stenosis for dilatation. A double J stent (3 to 6 Fr) was then introduced, remaining it during 6 weeks. RESULTS: There was no intraoperative complications. Median inhospital stay was 2 days (range, 2 to 8). The double J stent was removed without complications. All patients are asymptomatic with improvement in excretion times (MAG3 renography) and antero-posterior renal pelvis diameter (ultrasound measurement). CONCLUSIONS: Balloon dilatation is a viable option in the management of PUJ obstruction even in children under one year old, with minimal morbidity.

Tratamiento endourológico de la estenosis pieloureteral congénita / Management endourologic of pyeloureteral junction stenosis

Objetivo: Presentamos nuestra experiencia en el tratamiento endourológico de la estenosis pieloureteral (EPU) en niños. Material y Métodos: Revisamos 7 pacientes con EPU congénita (edades comprendidas entre 9 meses y 15 años) tratados mediante dilatación endourológica en nuestro centro desde Julio de 2004. El tratamiento se realizó mediante dilatación endourológica retrógrada bajo control radioscópico. En todos se realizó cistoscopia, se tutorizó el uréter (4Fr ó 5Fr), realizándose pielografía retrógrada y colocación de guía ureteral de 0,014´´ ó 0,035´´. Se realizó la dilatación de la EPU mediante balón de alta presión con perfil de 3Fr ó 5 Fr. Se colocaron stents tipo doble J de 3Fr, 4Fr, 4,8Fr ó 6 Fr, manteniéndolo durante 6 semanas. Resultados: En ningún caso hubo complicaciones intraoperatorias. La mediana de estancia hospitalaria fue 2 días (2-8 días). La retirada del stent tipo doble J se llevó a cabo sin incidencias a las 6 semanas de forma ambulatoria. Todos los pacientes permanecen asintomáticos, con disminución del diámetro anteroposterior de pelvis en el seguimiento ecográfico y mejoría del patrón obstructivo en el renograma. Conclusiones: El tratamiento de la EPU congénita mediante dilatación endourológica retrógrada es posible incluso por debajo del año de edad. La estancia hospitalaria es mínima, sin existir complicaciones intraoperatorias

Objetives: To report our experience with endourologic methods in the treatment of pyeloureteral stenosis in children. Materials and Methods: From July 2004, 7 patients from 9 months to 15 years old with pyeloureteral junction stenosis (PUJ) diagnosis underwent endourologic repair. An endourological dilatation was made under radioscopic control. The procedures consist of an initial cystoscopy with a retrograde placement of catheter (4 or 5 Fr) and the guide wire (0,014´´or 0,035´´). The high pressure balloon (3 to 5 Fr) was then railroad over the wire and positioned across the stenosis for dilatation. A double J stent (3 to 6 Fr) was then introduced, remaining it during 6 weeks. Results: There was no intraoperative complications. Median inhospital stay was 2 days (range, 2 to 8). The double J stent was removed without complications. All patients are asymptomatic with improvement in excretion times (MAG3 renography) and antero-posterior renal pelvis diameter (ultrasound measurement). Conclusions: Balloon dilatation is a viable option in the management of PUJ obstruction even in children under one year old, with minimal morbidity

[The paraurethral cyst or Skene's duct cyst in the female newborn]. / Quiste parauretral de Skene en niña recién nacida.

The paraurethral cyst or Skene's duct cyst is a rare congenital anomaly in the female newborn. It appears like a round, yellow or orange-colored cystic mass on either side of the urethral meatus. The reported incidence is 1 in 2.000 to 7.000 female births. The low frequency of the Skene's duct cyst and the little awareness of it and its benignity may lead to wrong diagnosis that underestimates its incidence. There are authors that agree with surgical treatment of paraurethral cyst to obtain an early resolution, even though a majority agrees to manage conservatively.

[Necrotizing fasciitis due to Streptococcus pyogenes]. / Fascitis necrosante por Streptococcus pyogenes.

Necrotizing fasciitis is a severe infection, with systemic involvement and tissue necrosis. The clinical course is rapid and often fatal. Although this entity is uncommon, early recognition and treatment is essential to improve prognosis. Necrotizing fasciitis should be suspected when there are symptoms of toxicity and there is severe pain, frequently out of proportion to the clinical findings. In addition, in the last few years the incidence of invasive disease due to Streptococcus pyogenes in children has increased. Treatment is based on life support, aggressive debridement, and antimicrobial therapy. Intravenous immunoglobulin (IVIG) as adjunctive therapy seems useful and reduces mortality. The case of an infant with necrotizing fasciitis of four extremities is presented.

Fascitis necrosante por Streptococcus pyogenes / Necrotizing fasciitis due to Streptococcus pyogenes

La fascitis necrosante es una infección grave, con afectación sistémica y necrosis de tejidos, con un curso rápido y con frecuencia fatal. Aunque es una entidad poco frecuente, debe ser sospechada y tratada precozmente ya que mejora el pronóstico. Pensaremos en ella ante un cuadro tóxico con dolor desproporcionado a los hallazgos en la exploración. La incidencia de enfermedad invasiva por Streptococcus pyogenes en niños está en aumento en los últimos años. El tratamiento se basa en medidas de soporte, desbridamiento quirúrgico amplio y antibioterapia; la asociación de inmunoglobulina inespecífica intravenosa parece beneficiosa, reduciendo la mortalidad. Se presenta el caso de un lactante con fascitis necrosante de las cuatro extremidades

Necrotizing fasciitis is a severe infection, with systemic involvement and tissue necrosis. The clinical course is rapid and often fatal. Although this entity is uncommon, early recognition and treatment is essential to improve prognosis. Necrotizing fasciitis should be suspected when there are symptoms of toxicity and there is severe pain, frequently out of proportion to the clinical findings. In addition, in the last few years the incidence of invasive disease due to Streptococcus pyogenes in children has increased. Treatment is based on life support, aggressive debridement, and antimicrobial therapy. Intravenous immunoglobulin (IVIG) as adjunctive therapy seems useful and reduces mortality. The case of an infant with necrotizing fasciitis of four extremities is presented

Quiste parauretral de Skene en niña recién nacida / The paraurethral cyst or Skene´s duct cyst in the female newborn

El quiste parauretral o quiste del conducto de Skene es una rara anomalía congénita descrita en neonatos de sexo femenino. Se trata de una formación quística que se muestra como una tumoración redonda, amarillenta o anaranjada, que se presenta adyacente al meato externo uretral. Su incidencia en la población se cifra entre 1 de cada 2.000 y 1 de cada 7.000 recién nacidos vivos femeninos. Sin embargo, sólo se recogen 47 ejemplos anteriores en la literatura en inglés. Es posible que el desconocimiento de esta patología entre la población médica y su benignidad produzcan fallos diagnósticos que infravaloren esta incidencia. Aunque existen autores que apoyan el tratamiento quirúrgico del quiste para lograr su curación, más aún a partir de los 6 meses de edad, la mayoría se ponen de acuerdo en la indicación de un tratamiento expectante dada la tendencia a la resolución espontánea

The paraurethral cyst or Skene´s duct cyst is a rare congenital anomaly in the female newborn. It appears like a round, yellow or orange-colored cystic mass on either side of the urethral meatus. The reported incidence is 1 in 2.000 to 7.000 female births. The low frequency of the Skene´s duct cyst and the little awareness of it and its benignity may lead to wrong diagnosis that underestimates its incidence. There are authors that agree with surgical treatment of paraurethral cyst to obtain an early resolution, even though a majority agrees to manage conservatively