RESUMO
Existe controversia y escasa literatura sobre las pautas de manejo del ureterocele y sus desenlaces, debido a que el abordaje varía desde procedimientos endoscópicos hasta reconstrucción completa. Nuestro objetivo es evaluar la efectividad y seguridad de los diferentes abordajes terapéuticos del ureterocele y sus desenlaces clínicos en la población pediátrica. Revisión sistemática de la literatura, respondiendo a la pregunta: ¿Cuáles son las diferentes opciones de manejo del ureterocele y sus desenlaces clínicos en la población pediátrica? Se encontraron 220 artículos, seleccionamos 48 artículos, para un total de 2.082 pacientes. Evaluamos la calidad metodológica con la herramienta ROBINS-I. Se realizó un metaanálisis de la mejoría del reflujo en el postoperatorio. Los pacientes con reflujo vesicoureteral (RVU) postoperatorio mostraron una mejoría posterior al tratamiento con una odds ratio de 0,24; se evidenció una gran heterogeneidad entre los estudios (I2: 85%; p < 0,001). La asociación entre los tratamientos practicados y la presencia de RVU pre no mostró una diferencia estadísticamente significativa (p = 0,321), en contraste con el RVU post (p = 0,02). En cuanto a la presencia de IVU pre y post, no se encontró diferencia estadísticamente significativa relacionada (p = 0,428 y p = 0,825). Existe una variación significativa en el abordaje, manejo inicial y seguimiento de los pacientes con ureterocele, posiblemente secundario al modo de presentación y curso clínico. Además, la mejoría del RVU posterior al tratamiento quirúrgico del ureterocele es significativo. La importancia de realizar estudios multiinstitucionales, prospectivos, aleatorizados y controlados es clave para evaluar el tratamiento y los resultados a largo plazo de esta patologí
There is controversy and little literature on the management guidelines for ureterocele and its outcomes since the approach varies from endoscopic procedures to complete reconstruction. Our objective is to evaluate the effectiveness and safety of the different therapeutic approaches for ureterocele and their clinical outcomes in the pediatric population. Systematic review of the literature, answering the question: What are the different management options for ureterocele and its clinical outcomes in the pediatric population? Two hundred and twenty articles were found, we selected 48 articles, for a total of 2,082 patients.We evaluated the methodological quality with the ROBINS-I tool.A meta-analysis of postoperative reflux improvement was performed. Patients with postoperative VUR showed improvement after treatment with an odds ratio 0.24; a great heterogeneity was evidenced among the studies (I2: 85%; p < 0.001].The association between the treatments performed and the presence of pre-VUR did not show a statistically significant difference (p = 0.321), in contrast to post-VUR (p = 0.02). Regarding the presence of pre- and post-UTI, no related statistically significant difference was found (p = 0.428 and p = 0.825). There is a significant variation in the approach, initial management, and follow-up of patients with ureterocele, possibly secondary to the mode of presentation and clinical course. In addition, the improvement in VUR after surgical treatment of the ureterocele is significant. The importance of conducting multi-institutional, prospective, randomized, and controlled studies is key to evaluating the treatment and long-term results of this pathology.
Assuntos
Humanos , População , Associação , Terapêutica , Ureterocele , Refluxo Vesicoureteral , Literatura , Pediatria , Cirurgia Geral , Doenças Ureterais , Urologia , Guias como Assunto , Aves CanorasRESUMO
Paciente de 29 años de edad, sexo masculino, sin antecedentes clínicos ni quirúrgicos de importancia. Acude al servicio de emergencia con dolor en la fosa iliaca derecha (escala de dolor EVA 6/10). Examen físico: abdomen suave, depresible, doloroso a la palpación en la fosa ilíaca derecha, signos de McBurney dudoso y Rovsing positivo. Se sospecha apendicitis aguda por lo cual se solicita una tomografía multicorte simple y contrastada de abdomen y pelvis que reporta dilatación quística del uréter distal izquierdo en su segmento intravesical, que es compatible con un ureterocele. Diagnóstico diferencial del dolor en la fosa ilíaca derecha: incluye algunos menos comunes como el ureterocele que no debe ser soslayado. (AU)
Assuntos
Masculino , Adulto , Ureterocele , Sinais e Sintomas , TomografiaRESUMO
Small cell bladder cancer (SCBC) is found in 0.5-1.2% of all bladder tumors. Ureteroceles are dilatation of the distal portion of an ectopic ureter, which association with tumors are rare. This article reports the first case described of an SCBC developed into a ureterocele, beyond a literature review.
RESUMO
OBJECTIVE: The objective of this video is to illustrate feasibility of the ureteral ligation for the treatment of massive ureteroceles associated with non-functioning upper kidney moieties in duplex kidneys. MATERIALS AND METHODS: In this video, one case is presented to demonstrate this novel technique. A nine-year-old boy presented with progressive lower urinary tract symptoms. Radiological workup depicted a duplex kidney on the left side with the absence of function on the upper pole and hydroureteronephrosis with a massive ureterocele. Laparoscopic ureteral transection, drainage, and ligation of both extremities of the enlarged ureter (upper pole ureter) were performed. RESULTS: Immediately after ureteral ligation, ultrasonic evidence of ureterocele decompression and improved hydroureteronephrosis was observed. This patient remained asymptomatic without postoperative complications after 3 years. De novo reflux was not observed. CONCLUSION: Ureteral ligation, as demonstrated in the video, is a good approach for the treatment of massive ureteroceles associated with non-functioning upper kidney moieties in duplex kidneys. Compared with the current standard techniques (incision/puncture), ureteral ligation has the clear advantage of not causing 'de novo reflux' or unsuccessful de-obstruction, and is not as surgically demanding as other reconstructive/ablative techniques. The disadvantage is the need of regular clinical and ultrasonographic follow-up.
Assuntos
Hidronefrose/cirurgia , Rim/anormalidades , Laparoscopia/métodos , Procedimentos de Cirurgia Plástica/métodos , Ureter/cirurgia , Ureterocele/cirurgia , Criança , Humanos , Hidronefrose/diagnóstico , Hidronefrose/etiologia , Rim/cirurgia , Ligadura/métodos , Masculino , Ureterocele/complicaçõesRESUMO
PURPOSE: A growing body of evidence suggests that it is safe to ligate the ureter of poorly functioning renal moieties during renal transplantation. We present clinical outcomes and data on hydronephrosis progression in pediatric cases associated with ectopic ureters and obstructive ureteroceles. MATERIALS AND METHODS: We prospectively collected data for 35 consecutive patients (23 females and 12 males) who underwent ureteral clipping between February 2011 and August 2016. Patients were divided into 4 groups consisting of 1) duplex system with ectopic ureter (45.7%), 2) duplex system with a large ureterocele (11.4%), 3) other duplex system (8.6%) and 4) single system kidneys (34.3%). Patients were followed for clinical outcomes and hydronephrosis trends. Comparisons included preoperative and postoperative anteroposterior diameter, maximal ureteral diameter and ureterocele size. RESULTS: Median age at surgery was 59 months (IQR 11 to 120, range 5 to 216). Median ± SD operative time was 108.9 ± 31.1 minutes (range 20 to 180) and median length of stay was 7.5 hours (IQR 6 to 19, range 5 to 336). Immediate resolution of urinary incontinence was observed in all 16 ectopic ureter cases. After a median ± SD followup of 20.8 ± 13.8 months (IQR 8.5 to 30, range 6 to 50) 97.2% of the patients remained asymptomatic. No significant differences were observed between initial and last anteroposterior diameter measurements except in group 1 (p = 0.001). All ureteroceles demonstrated a significant decrease in median ± SD size after clipping (from 2.7 ± 0.41 to 0.53 ± 0.92 cm, p = 0.003). Pyonephrosis developed in 1 patient, who underwent laparoscopic nephrectomy. CONCLUSIONS: Ureteral clipping appears to be a reasonable, safe and effective option for pediatric patients in the reported settings, with the potential to be simpler and quicker than extirpative or reconstructive procedures.
Assuntos
Hidronefrose/cirurgia , Transplante de Rim/métodos , Rim/anormalidades , Insuficiência Renal/cirurgia , Ureter/cirurgia , Anormalidades Urogenitais/cirurgia , Adolescente , Criança , Pré-Escolar , Coristoma/cirurgia , Progressão da Doença , Feminino , Humanos , Hidronefrose/fisiopatologia , Lactente , Ligadura , Masculino , Insuficiência Renal/etiologia , Obstrução Ureteral/cirurgia , Ureterocele/cirurgia , Anormalidades Urogenitais/complicaçõesRESUMO
El ureterocele es una malformación del sistema urinario relativamente frecuente en niños; sin embargo, el prolapso del ureterocele a través de la uretra es una presentación, en extremo rara. La urorresonancia magnética es la prueba de elección para el diagnóstico definitivo. El tratamiento inicial de un ureterocele prolapsado consiste en la descompresión de la masa. Presentamos el caso clínico de una lactante de 7 meses con duplicación del sistema colector y ureterocele ectópico derecho, que apareció como una masa vulvar.
Ureterocele is a relatively common malformation of the urinary system in children; however, the ureterocele prolapse through the urethra is an extremely rare presentation. Urological nuclear magnetic resonance is the test of choice for definitive diagnosis. Initial treatment of a prolapsed ureterocele involves decompression of the mass. We report the case of a 7-month-old infant with duplication of the collecting system and right ectopic ureterocele appearing as a vulvar mass.
Assuntos
Humanos , Feminino , Lactente , Ureterocele/diagnóstico , Prolapso , Ureterocele/complicações , VulvaRESUMO
Ureterocele is a relatively common malformation of the urinary system in children; however, the ureterocele prolapse through the urethra is an extremely rare presentation. Urological nuclear magnetic resonance is the test of choice for definitive diagnosis. Initial treatment of a prolapsed ureterocele involves decompression of the mass. We report the case of a 7-month-old infant with duplication of the collecting system and right ectopic ureterocele appearing as a vulvar mass.
El ureterocele es una malformación del sistema urinario relativamente frecuente en niños; sin embargo, el prolapso del ureterocele a través de la uretra es una presentación, en extremo rara. La urorresonancia magnética es la prueba de elección para el diagnóstico definitivo. El tratamiento inicial de un ureterocele prolapsado consiste en la descompresión de la masa. Presentamos el caso clínico de una lactante de 7 meses con duplicación del sistema colector y ureterocele ectópico derecho, que apareció como una masa vulvar.
Assuntos
Ureterocele/diagnóstico , Feminino , Humanos , Lactente , Prolapso , Ureterocele/complicações , VulvaRESUMO
Las malformaciones renales son las segundas más frecuentes después de las neurológicas. El diagnóstico oportuno de dicha condición se basa en el ultrasonido obstétrico durante el control prenatal. Sin embargo, el problema que se presenta con las malformaciones renales es que frecuentemente están aunadas a malformacionesurinarias y daños neurológicos incompatibles con la vida. No hay un tratamiento in útero, de allí que en ocasiones sea necesario interrumpir el embarazo. En el caso clínico presentado a continuación, el diagnóstico se realizó en la semana 26 por ultrasonido obstétrico, reportando displasia quística renal y probable ureterocele. Lo que aporta este caso, y que se confirmó con la cirugía y el estudio de patología, es la presencia de quistes en el polo superior del riñón izquierdo, doble sistema colector (hallazgo de cirugía) y megaureterocele. Dichas condiciones provocan Insuficiencia Renal Crónica (IRC) e hipertensión arterial en el producto, provocándole la muerte in útero. Si nace vivo, entonces muere a los pocos días por las causas anteriormente mencionadas. Son productos que nacen con peso y talla baja, con malformaciones neurológicas a nivel de columna y cerebro, y con quistes en otros órganos (algo que no se presentó en esta paciente). La Homeopatía fue el único tratamiento que se siguió durante el embarazo, y los resultados fueron extraordinarios. El producto nace vivo, con peso y talla normal alta, sin ningún otro daño o malformación. (AU)
Renal malformations are the second most common after the neurological malformations. Early diagnosis of this condition is based on obstetrical ultrasound during the prenatal control. However, the problema that occurs with kidney malformations is that they are often coupled with urinary malformations and neurological damage incompatible with life. There is no treatment in the uterous, hence sometimes necessary to terminate the pregnancy. In the clinical case presented the diagnosis was made at week 26 by the obstetrical ultrasound, reporting cystic renal displasia and likely uterocele. What brings this case, and which was confirmed by surgery and the pathology study is the presence of cysts in the upper pole of the left kidney, double collecting system (finding surgery) and megaureterocele. These conditions cause chronic renal failure (CRF) and hypertension in the product, causing death in uterous. If born alive, then he dies within a few days for the above causes. These are products that are born with low weight and size, level with neurlogical spine and brain malformations, and with cysts in other organs (which was not presented in this present). Homeopathy was the only treatment that was followed during pregnancy, and the results were extaordinary. The product is born alive, with high normal weight and size, no other damage or malformation. (AU)
Assuntos
Humanos , Feminino , Recém-Nascido , Pré-Escolar , Criança , Homeopatia , Rim Policístico Autossômico Recessivo , Gravidez , UreteroceleRESUMO
El cecoureterocele es un ureterocele ectópico, malformación congénita del uréter distal en su desembocadura a la vejiga, que da lugar a un saco membranoso ciego que protruye por la uretra hasta el exterior. Presentamos a una niña de cinco meses y 6 kg de peso que acude para evaluación y manejo de una masa de color violáceo que protruye por el introito vaginal. Al examen físico, buen estado general. FC 134 lpm, TA 93/56 mmHg, FR 38 x´, T 36o C, Sat 02 96 %. Ecografía renal: Riñón izquierdo con una imagen líquida parahiliar compatible con doble sistema colector incompleto con dilatación del segmento proximal. Ecografía vesical: imagen con contenido líquido denso relacionada con el sistema urinario y compatible con ureterocele. Gammagrafía renal DMSA: área hipocaptante en polo superior del riñón izquierdo. Renograma isotópico DTPA: Retención del trazador en pelvis renal izquierda. Corrección quirúrgica consistente en nefrectomía parcial con escisión del polo superior del riñon izquierdo, separación y sección distal del uréter dilatado y resección del ureterocele. Evolución postoperatoria satisfactoria con alta a los dos días de la intervención. El cecoureterocele es una rara malformación de la vía urinaria habitualmente asociada a otras malformaciones corregibles quirúrgicamente. Recomendamos considerar esta posibilidad, en el diagnóstico diferencial de toda masa que protruye por la vagina.
A cecoureterocele is an ectopic ureterocele, congenital anomaly of the distal ureter at the uretero-vesical junction, consisting in a closed membranous pouch which protrudes through the urethra into the vagina. We present a five months old, 6 kg girl, admitted for assessment and management of a dark red mass protruding through the vagina. On examination, good general health. BP 93/56, HR 134 bpm, RR 38x´, T 36o, O2 Sat 96 %. Renal ultrasound: parahiliar liquid shadow in the left kidney sugesting a duplicated incomplete collecting system with a dilated proximal segment. Bladder ultrasound: dense liquid shadow related to the urinary tract sugesting a ureterocele. DMSA renal gamma scan: poor captation in the upper pole of the left kidney. DTPA isotopic renogram: Retention of the tracer in the left renal pelvis. Surgical correction consisting in a left upper pole partial nephrectomy, separation and distal section of the dilated ureter and resection of the ureterocele. Good postoperative course, discharged two days later. A cecoureterocele is an uncommon congenital malformation of the urinary tract commonly associated with other surgically correctable malformations. We recomend to consider this posibility in the differential diagnosis of any mass protruding through the vagina.
Assuntos
Humanos , Feminino , Lactente , Ureterocele , Anormalidades Congênitas , Ultrassonografia/instrumentaçãoRESUMO
BACKGROUND: Ureterocele is a cystic dilation of the distal ureteral segment. The incidence in women ranges from 1/5,000 to 1/12,000. In adults, they are poorly diagnosed and are asymptomatic. Prolapse through the urethra is uncommon, and involves acute urine retention and a reducible vulvar tumour. CLINICAL CASE: Woman of 24 years old, two previous caesarean and two abortions. She had incomplete bladder emptying, intermittent voiding, bladder straining and tenesmus, three months before admission. After the voiding effort she presented with acute urine retention with sudden onset of tumour in the vulva. The tumour was manually reduced under regional anaesthesia. A cystoscopy was performed, finding an ischaemic de-roofing of the anterior wall of the ureterocele, causing vesicoureteral reflux grade IV. Surgical correction was performed with Cohen re-implantation and insertion of a double-J catheter. The catheter was removed 30 days later, with a successful post-operative course. DISCUSSION: Its aetiology is unclear, and most are diagnosed by ultrasound in the prenatal period. The clinical presentation is variable, from urinary tract infection to prolapse. Despite its size, it may cause complications such as ischaemic de-roofing, which if diagnosed soon may be resolved successfully, as with this patient. CONCLUSION: The results and treatment may be favourable when no renal impact or concomitant anatomical changes are present, as is the case of this patient.
Assuntos
Prolapso de Órgão Pélvico/complicações , Ureterocele/complicações , Retenção Urinária/etiologia , Doença Aguda , Cistoscopia , Feminino , Humanos , Prolapso de Órgão Pélvico/diagnóstico por imagem , Prolapso de Órgão Pélvico/cirurgia , Reimplante , Ureter/cirurgia , Ureterocele/diagnóstico por imagem , Ureterocele/cirurgia , Cateterismo Urinário , Refluxo Vesicoureteral/etiologia , Adulto JovemRESUMO
Un ureterocele es una dilatación del extremo distal del uréter que se produce en etapa fetal. La incidencia varía según las series entre 1:500-4000 pacientes, predominantemente en niñas. Se presenta el caso de una paciente de color de piel blanca, 50 años de edad, con antecedentes de infecciones repetidas del tracto urinario que acudió a médico de familia porque desde hacía varios meses su cuadro se había exacerbado con varios episodios de disuria, polaquiuria y urgencia miccional. Se recomendó realizar ultrasonido abdominal y acudió al Hospital General Universitario Dr. Gustavo Aldereguía Lima, de Cienfuegos, donde mediante estudio ultrasonográfico abdominal con múltiples cortes se observó una imagen mixta hacia la región media del riñón derecho. En el riñón izquierdo se observó ureteropielocaliectasia con buena diferenciación córtico medular y el uréter dilatado hasta su entrada a la vejiga como imagen ecolúcida redondeada de aspecto quístico intravesical. Por ser un hallazgo poco común se decidió la presentación del caso.
Ureterocele is a dilation of the distal end of the ureter that occurs during fetal stage. Its incidence varies according to the series between 1/500 to 1/4000 patients, predominantly in girls. A case of a 50-year-old white female patient with a history of recurrent urinary tract infections is presented. She attended the family doctor’s office due to the exacerbation of her condition by some episodes of dysuria, urinary frequency and urgency for several months. Abdominal ultrasound was recommended. A complex structure in the middle part of the right kidney was disclosed by a multislice ultrasonography of the abdominal region performed in the Dr. Gustavo Aldereguía Lima University General Hospital in Cienfuegos. Ureteropyelocaliectasis with good corticomedullary differentiation was observed in the left kidney, as well as dilation of the ureter until its entry into the bladder as a cystic intravesical mass. It was decided to report this case given its rare occurrence.
RESUMO
La cistitis eosinofílica es una entidad poco común que se caracteriza por la inflamación con infiltrado eosinofílico de la pared vesical. No es muy frecuente en la edad pediátrica con mínimos reportes de casos en la literatura. Presentamos un caso de un paciente de 24 meses, a quien se le diagnostica dicha patología, el manejo instaurado y una revisión de la literatura.
Eosinophilic cystitis is a rare entity characterized by inflammations with eosinophilic infiltration of the bladder wall. It appears infrequently in children, and there are few case reports in medical literature. This paper presents the case of a 24-month-old patient diagnosed with this condition, the treatment that has been established for it, and a review of the literature.
A cistites eosinofílica é uma entidade invulgar que se caracteriza pela inflamação com infiltrado eosinofílico da parede vesical. Não é muito frequente na idade pediátrica com mínimos reportes de casos na literatura. Apresentamos um caso de um paciente de 24 meses, a quem se lhe diagnostica dita patologia, o manejo instaurado e uma revisão da literatura. Métodos diagnósticos moleculares em tuberculoses
Assuntos
Humanos , Recém-Nascido , Lactente , Pré-Escolar , Criança , Adolescente , Cistite , Obstrução Ureteral , Ureterocele , Bexiga Urinária , Cistoscopia , EosinofiliaRESUMO
Relataram-se o quadro clínico, o diagnóstico, o tratamento e o acompanhamento de um cão com ureterocele ectópica e hidronefrose/hidroureter associados. Após as informações obtidas nos exames laboratoriais e de diagnóstico por imagem, o animal foi submetido à ureterocelectomia e à neoureterostomia. O cão apresentou evolução favorável após a conduta terapêutica. Apesar de pouco frequente, a ureterocele deve ser considerada como diagnóstico diferencial em animais jovens com histórico de incontinência urinária.
The clinical features, diagnosis, treatment and monitoring of a dog with an ectopic ureterocele and concomitant hydronephrosis/hydroureter were reported. After the information obtained in laboratory tests and imaging diagnosis, the animal was submitted to ureterocelectomy and neoureterostomy. The dog presented a favorable evolution after the therapy. Although infrequent, the ureterocele should be considered a differential diagnosis in young animals with history of urinary incontinence.
Assuntos
Animais , Cães , Cães/anormalidades , Ureterocele/diagnóstico , Ureterocele/urina , Ureterocele/veterinária , Ureterocele/terapiaRESUMO
Relataram-se o quadro clínico, o diagnóstico, o tratamento e o acompanhamento de um cão com ureterocele ectópica e hidronefrose/hidroureter associados. Após as informações obtidas nos exames laboratoriais e de diagnóstico por imagem, o animal foi submetido à ureterocelectomia e à neoureterostomia. O cão apresentou evolução favorável após a conduta terapêutica. Apesar de pouco frequente, a ureterocele deve ser considerada como diagnóstico diferencial em animais jovens com histórico de incontinência urinária.(AU)
The clinical features, diagnosis, treatment and monitoring of a dog with an ectopic ureterocele and concomitant hydronephrosis/hydroureter were reported. After the information obtained in laboratory tests and imaging diagnosis, the animal was submitted to ureterocelectomy and neoureterostomy. The dog presented a favorable evolution after the therapy. Although infrequent, the ureterocele should be considered a differential diagnosis in young animals with history of urinary incontinence.(AU)
Assuntos
Animais , Cães , Ureterocele/diagnóstico , Ureterocele/urina , Ureterocele/veterinária , Cães/anormalidades , Ureterocele/terapiaRESUMO
Ureterocele é uma dilatação cística do ureter intravesical. A maioria das ureteroceles é diagnosticada no útero ou imediatamente após nascimento durante exames de ecografia na pesquisa de malformações renais. Severas infecções do trato urinário são a apresentação pós-natal mais comum das ureteroceles, mas podem, raramente, sofrer um prolapso e agudamente obstruir a saída da bexiga. Ocorre mais frequentemente em crianças, entretanto quando encontrada em adultos geralmente está associada à unilateralidade, sendo a sua bilateralidade incomum. Nós apresentamos um relato de caso de uma paciente feminina adulta com ureterocele bilateral e com histórias de infecções do trato urinário por repetição (AU)
Ureterocele is a cystic enlargement of the intravesical ureter. Most ureteroceles are diagnosed in the uterus or immediately after birth in ultrasonographic scans searching for renal malformations. Serious infections of the urinary tract are the most common post-natal presentation of ureteroceles, and they may seldom prolapse and obstruct the bladder outlet. It occurs more frequently in children, but it also appears in adults, usually unilaterally, bilaterality being uncommon. Here we describe the case of an adult female patient with bilateral ureterocele with a history of repeated urinary tract infections (AU)
Assuntos
Humanos , Feminino , Adulto , Ureterocele/cirurgia , Ureterocele/diagnósticoRESUMO
Se presentan tres casos clínicos procedentes de un estudio que se llevó a cabo en el Servicio de Urología del Hospital Pediátrico Provincial "Serafín Sánchez"de Sancti Spíritus a partir del año 1993. Se relaciona el origen embriológico de la duplicidad ureteral completa (DUC) con las manifestaciones clínicas y con los resultados de los estudios radiológicos usados en el diagnóstico. Se ilustran esquemas de tres casos correspondientes a DUC: 1 DUC con reflujo masivo y atrofia del polo inferior del riñón izquierdo y uréter ectópico en vagina. Tres hidronefrosis segmentarias del polo superior del riñón derecho y ureterocele ectópico. Es destacable la importancia de una buena comprensión del origen embriológico de la DUC para poder explicar con mayor claridad el cuadro clínico y los hallazgos radiológicos encontrados en los diferentes estudios complementarios.
The embriology origin of the complete ureteral doubling (CUD) with clinical manifestations and results of radiological studies used in the diagnosis are presented.Illustrations of some clinical cases are shownTherre are these clinical cases of the studied carried out at the urology Service of Serafin Sanchez Pediatric Hospital of Sancti Spiritus from 1993. Schemes and photographs of radiologic studies of three cases corresponding to CUD are illustred: 1 CUD with massive reflux and atrophy of the inferior pole of the rigth kidney, 2 Segmentary hydronephrosis of the superior pole of the left kidney and ectopic ureter in vagina, 3 segmentary hydronephrosis of the superior polo of the rigth kidney and the ectopic ureterocele .It is important to have a good comprehension of CUD embriologyc origin for explaining clearly the clinied picture and radiologic findings presented in different complementary studies.