Sonographic differential diagnosis of duplex kidneys.

Duplex kidneys have two renal pelvises and two ureters, which can join on the way to the urinary bladder but can also enter the bladder separately. A distinction must be made between normal and pathological duplex kidneys. In normal duplex kidneys, both renal pelvises are normal in width, and the upper and lower poles are approximately the same size. Furthermore, ureters are not dilated, and the upper and lower poles of the kidneys are not cystically altered. In contrast, pathological duplex kidneys, occurring in about 50 % of cases, are characterized by dilation of one or both renal pelvises. Additionally, one or both ureters may be dilated. Megaureters may be obstructive or refluxive. If a megaureter is present, a ureterocele must be ruled out, as well as an ectopically opening ureter. A pathological duplex kidney must always be assumed if one pole of the kidney is hypoplastic. Hypoplasia of the upper renal pole is often associated with an obstructive megaureter. Vesicoureteral reflux into the lower pyelon is common in hypoplasia of the lower pole. In the presence of vesicoureteral reflux, the associated (lower) pyelon is dilated when the bladder is full or during micturition. In addition, there is a dilated ureter. On the other hand, the pyelon can have a normal width when the bladder is empty. In rare cases, one pole may be cystically altered in pathological duplex kidneys. In this instance, segmental multicystic dysplastic duplex kidney must be differentiated from segmental multicystic nephroma.

Bilateral Calculi in a Child With Bilateral Single System Ureteroceles.

Ureteroceles in children are detected with prenatal sonography and less commonly during the evaluation following a urinary tract infection. Rarely do ureteroceles in the pediatric population present with stones, particularly in a bilateral fashion. We present a case of a 5-year-old boy found to have bilateral intravesical single system ureteroceles harboring multiple large calculi treated successfully with a staged endoscopic approach.

18F-Fluciclovine Uptake in a Ureterocele.

A 60-year-old man with prostate adenocarcinoma status post radical prostatectomy and bilateral pelvic lymph node dissection referred for restaging F-fluciclovine PET/CT due to rising serum prostate-specific antigen levels (1.1 ng/mL at that time of imaging). PET/CT images were obtained from the proximal thighs to the vertex of the skull approximately 3 to 5 minutes after the IV administration of 347.8 MBq (9.4 mCi) of F-fluciclovine. PET/CT imaging demonstrated a focus of abnormally increased F-fluciclovine uptake at the right ureterovesical junction. Subsequent MRI of the pelvis revealed that this focus corresponded to a benign ureterocele.

Ureterocele habitado y doble sistema incompleto / Occupied ureterocele and incomplete double collecting system

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Case of Large Cecoureterocele with Contralateral Renal Rupture in Neonate.

A cecoureterocele is a rare form of ectopic ureterocele that the orifice of the affected ureter is within the bladder, but the cavity of the ureterocele extends beyond the bladder neck into the urethra. We present a case of a newborn boy with a large cecoureterocele with contralateral renal rupture. He required an emergency transurethral incision of the ureterocele for the treatment of acute renal failure and respiratory disorder.

Ureteroureterostomy irrespective of ureteral size or upper pole function: a single center experience.

OBJECTIVE: Although ureteroureterostomy (UU) is an established procedure for the treatment of duplex anomalies, there may be a reluctance to apply this approach to patients with poor upper pole function and/or marked degrees of ureteral dilation. METHODS: An institutional review board (IRB)-approved retrospective analysis of all patients undergoing UU between 2006 and present was performed. All patients underwent an end-to-side anastomosis with a double-J stent left in the lower pole ureter. Laparoscopic repairs were done 'high' and open repairs were done 'low'. If the upper pole ureter remained massively dilated after transection, the ureter was partially closed to reduce the length of the anastomosis. Data collected included demographics, diagnosis, surgical interventions, imaging studies and outcomes. RESULTS: A total of 41 patients (43 renal units) were identified. There were 35 females and six males with an average age at surgery of 2.3 years (range 55 days to 15.9 years) and an average follow up of 2.8 years. Diagnosis included ureterocele (17), ectopic duplex ureter (25) and ureteral triplication (1). Thirty-six patients underwent UU only and five underwent UU with simultaneous lower pole reimplantation. Twelve of the 41 patients (29%) underwent laparoscopic repair. Twelve of the 43 renal units (28%) required ureteral tapering, of which three were performed laparoscopically. Preoperative median upper pole function was 17% (0-35%). Six patients had no measurable function and ten had < 15%. No patient developed lower pole hydronephrosis in the follow-up period. There were two complications: one patient was found to have a post-operative ureterovesical junction (UVJ) stricture and the second had an anastomotic stricture. CONCLUSION: Ureteroureterostomy is a safe and effective technique for the reconstruction of duplex anomalies, even with a massively dilated and poorly functioning upper pole moiety. With no identifiable negative effect on the lower pole system, the concept of automatically removing 'dysplastic' upper pole segments can be challenged.

[Ureteral triplication]. / Triplicidad ureteral.

INTRODUCTION: Ureteral triplication is considered a rare anomaly and its association with ectopic ureterocele, is unusual. CLINICAL CASE: We report a male with a history of recurrent urinary tract infections, who showed left vesicoureteral reflux associated with apparent ureteral duplication in multiple test performed, and only during the vesicostomy was discovered a third ureter ending in a ectopic ureterocele corresponding with the upper pole ectopic kidney. CONCLUSIONS: Being a very unusual and complex pathology, and despite all the tests made, it is very difficult to make an accurate presurgical diagnosis, therefore the diagnosis sometimes is only performed during the surgical treatment, which must be individualized according to fthe unctional stage of each renal portion and the termination of each ureter.

Ureterocele containing a stone in a duplex system.

The formation of calcified stone in the ureterocele, a frequent event in adults, is very uncommon in a pediatric age. We present a case of a ureterocele containing a calcified stone in an 8-year-old girl. The diagnosis was made with radiological investigations (intravenous pyelogram, ultrasonography and, eventually, voiding cystourethrogram). Meatostomy and calculus extraction, or open surgery in more complicated cases, are the treatments of choice.

Urosonografía miccional seriada: una técnica segura para el estudio de toda la vía urinaria en pediatría / Serial voiding urosonography: a safe technique for the study of the entire urinary tract in children

Desde hace más de una década, la urosonografía miccional seriada (UMS) es una de las modalidades de imagen utilizada para detectar el reflujo vésico-ureteral (RVU) en los niños, que actualmente incluye el estudio de la uretra. La falta de irradiación es su principal ventaja. A raíz del importante reconocimiento europeo otorgado a la UMS por parte de la Sociedad Europea de Radiología Pediátrica (ESPR) en el último Congreso celebrado en Londres en el mes de mayo de 2011, creemos relevante dar a conocer los detalles necesarios para poder realizar esta técnica con éxito. En esta actualización sobre la UMS se describen el procedimiento completo de la técnica, sus indicaciones y las diferentes características de una técnica de imagen diagnóstica que, a nuestro entender, se convertirá en los próximos años en la técnica de elección para el despistaje de RVU y de la afección uretral en el paciente pediátrico(AU)

For more than a decade, serial voiding urosonography has been one of the imaging modalities used to detect vesicoureteral reflux in children and it is now also used to study the urethra. The main advantage of this technique is it does not irradiate. Given the important recognition of serial voiding urosonography by the European Society of Pediatric Radiology at the last congress in May 2011, we think it is useful to describe how to carry out this technique successfully. In this update on serial voiding urosonography, we describe the indications, the entire procedure, and the different characteristics of this technique, which we understand will soon become the technique of choice for screening for vesicoureteral reflux as well as for urethral pathology in children(AU)

[Bilateral ureterocele in single collection system: a particular case]. / Ureterocele bilateral en sistema único: un caso particular.

INTRODUCTION: Ureterocele is an uncommon congenital urinary tract malformation, which consists in a cystic dilation of the vesical portion of the ureter. We present a rare case of ureterocele, reviewing the most important aspects and characteristics that make it so unusual. CASE: Seven year old male admitted for hematuria in the context of afebrile urinary tract infection, the ultrasound revealed a right hydroureteronephrosis (HUN) in a single collecting system and a voiding cystourethogram (VCUG) showed a right ureterocele. A cystoscopy demonstrated the presence of a bilateral orthotopicureterocele in a single collecting system. The patient underwent an endoscopic incision in order to drain the hydronephrotic system. After a month, while performing a check up using ultrasound, we could observe an important reduction in the right HUN, however, it also was acknowledged the presence of dilation of the left distal ureter, reason why it was decided to puncture the left ureterocele. COMMENTS: We present an unusual case: male with a bilateral orthotopicureterocele in a single collecting system and its clinical management. Its particularity is discussed.

Ureterocele: presentación de un caso / Ureterocele: a case report

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(AU)

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 doctors 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(AU)

[Should morphology of the upper pole in renal duplication with preserved function and associated ureterocele be taken into account during treatment planning?]. / Czy zmiany morfologiczne górnego bieguna zdwojonej nerki z zachowana jego czynnoscia i wspólistniejaca torbiela moczowodu maja wplyw na wybór sposobu leczenia?

INTRODUCTION: The aim of this study was to assess structural changes of the upper pole in renal duplication with coexisting ureterocele with regard to primary and/or secondary lesions. These changes might be of importance in treatment planning. MATERIAL AND METHODS: The material of this study consisted of clinical documentation and results of histopathology of 23 upper poles removed due to renal duplication with coexisting ureterocele. The qualification criterion was preserved function of the upper pole seen with 99mTc-DTPA (99mTechnetium diethylenetriaminepentaacetic acid)/99mTc-DMSA (99mTechnetium dimercaptosuccinic acid). Resection of the upper pole was indicated in patients with recurrent urinary tract infections and/or persistent vesicoureteral reflux to the lower pole following endoscopic surgery of the ureterocele and/or low function of the upper pole. Morphological lesions were classified as primary (dysplasia) or secondary lesions. The patients were operated at the Department of Pediatric and Oncologic Surgery, PMU, in 1990-2008. RESULTS: The study group consisted of 17 girls and 6 boys aged from 4 months to 9 years (mean 40 months). Recurrent urinary tract infections noted in 16 (70%) children were the most frequent indication for surgery. The preoperative mean function of the renal poles assessed with DTPA/DMSA represented 6% of the differential renal function. Dysplasia was identified in eight resected renal poles (34%) with coexisting secondary lesions in three of them. Secondary lesions only were seen in 15 poles (66%). There was no correlation between age and incidence of dysplasia during follow-up (Pearson's correlation coefficient r = 0.031). CONCLUSIONS: Secondary lesions are a quite frequent finding in resected upper poles. As 66% of the renal poles studied with histopathology revealed secondary lesions only, we believe that renal sparing treatment is justified in cases of urinary duplication with coexisting ureterocele.

Bilateral intravesical ureterocele associated with unilateral partial duplication of the ureter and other anomalies: proposal of a new variant to the classification of ureterocles based on a perinatal autopsy, review of the literature and embryology.

The aims of this study were to demonstrate a case of bilateral intravesical ureterocele associated with megacystis and mega-ureters, unilateral partial duplication of the ureter and unilateral segmental renal dysplasia of the upper pole and an accessory spleen and to propose an addition of the new variant to the classification of ureteroceles. A perinatal necropsy was conducted on the 21-week fetus by employing the Rokitansky procedure with evisceration performed in blocks. The autopsy revealed the aforementioned abnormalities without cardiac or neural anomalies. The amniocentesis report was normal. Ureterocele is a saccular expansion of the distal ureter. It is most commonly observed in females and children and usually affects the upper moiety of a complete pyeloureteral duplication. Four types of ureteroceles are described: (A) ureterocele with single ureter (10%); (B) ureterocele with total duplication and intravesical development (10%); (C) ureterocele with total duplication and extravesical development (62%); and (D) ureterocele with ectopic ureter (3%). One case in a new born with bilateral intravesical ureterocele associated with hydrouretero-nephrosis and hyperechogenic spots in kidneys has been reported, but bilateral intravesical ureterocele with unilateral incomplete pyeloureteral duplication has never been described in the literature.

[ureterocele prolapse through the urethra: a case report].

We report a case of prolapse of a simple ureterocele presenting as perineural tumor. A 60-year-old woman presented with perineum pain and bleeding. A physical examination revealed a hard mass, 30 mm in diameter protruding from the external meatus. The computerized tomography, magnetic resonance imaging and cystography showed an uncharacterized tumor. Endoscopic examination was performed. However, just before resection the mass collapsed spontaneously and turned out to be a prolapse of ureterocele. No transurethral incision was performed. Eleven months postoperatively, the patient has not developed vesicoureteral reflux or urinary tract infection. Physicians should consider prolapse of a simple ureterocele in the differential diagnosis of the female meatal tumor.

Diagnóstico diferencial de las masas interlabiales en niñas menores de 5 años / Differential diagnosis of the interlabial masses in girls under 5 years old

Las masas que podemos encontrar a nivel interlabial en una niña representan un amplio espectro de lesiones heterogéneas y a menudo existe confusión en su diagnóstico, manejo y pronóstico. Material y métodos. Se presentan 5 casos de masas interlabiales, prolapso uretral, dos quistes parauretrales de Skene, sarcoma botrioidevaginal y pólipo fibroepitelial de vagina, y su clínica de debut. Resultados. El prolapso uretral se presenta en una niña de 4 años (..) (AU)

We present 5 cases of interlabial masses, prolapsed urethra, two paraurethral Skene cysts, botryoid sarcoma and fibroepithelial polyp, and its clinical of debut. Results. A prolapsed urethra is presented in a 4 year old black girl with vaginal bleeding from edamatous periurethral mass. The paraurethral cyst is a yellowish cystic mass displacing the urethral meatus in two newborn girls. The fibroepithelial polyp is presented in a newborn girl as polipoid and wart like tumor and not bleeding injury in the introitus. The botryoid sarcoma appears in a 1 year old girl with ulcerated polypoid mass of 2 cm from vagina. All cases were treated with (..) (AU)

[Successful combined surgical treatment double giant ureterocele complicated by double ureterohydronephrosis, cascade lithiasis and uterine myomatosis].

A case is reported of a 58 year old patient with a diagnosis: double giant ureterocele, secondary multiple calculi of the right ureterocele, calculus of the inferior calyx of the right kidney, calculus of the terminal part of the left ureter, double ureterohydronephrosis, chronic pyelonephritis, multiple calcifying myoma of the uterus. A combined single-stage operation (panhysterectomy, deletion of multiple calculi of the right ureterocele, deletion of the calculus of the left ureterocele, crosscut right ureterectomy with excision of ureterocele, right ureterocystoneostomy by Leadbetter-Politano, installation of the double J-stent into the right kidney, crosscut and longitudinal left ureterectomy with excision of ureterocele, left ureterocystoneostomy by Leadbetter-Politano, installation of intubating drainage into the left ureter, cystostomy) followed by extracorporeal shock-wave lithotripsy were performed in this adult patient with combined pathology of the urinary system.