94 results match your criteria Obstructed Megaureter


Laparoscopic Extravesical Reimplantation in Children with Primary Obstructive Megaureter.

J Laparoendosc Adv Surg Tech A 2020 Mar 26. Epub 2020 Mar 26.

Department of Pediatric Surgery & Urology, University Hospital of Vall d'Hebron, Barcelona, Spain.

Conservative management of primary obstructive megaureter (POM) appears as the best option in patients with adequate ureteral drainage. Nevertheless, surgical intervention is indicated in cases of recurrent urinary tract Infections (UTIs), deterioration of split renal function, and significant obstruction. The gold standard includes: Ureteral reimplantation with or without tapering by open approach. Read More

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http://dx.doi.org/10.1089/lap.2019.0396DOI Listing

Comparative Clinical Study Between Modified Ureteral Orthotopic Reimplantation and Cohen Method Under Pneumovesicum in Pediatric Patients With Hydroureteronephrosis.

Front Pediatr 2020 6;8:62. Epub 2020 Mar 6.

Department of Pediatric Surgery, Qilu Hospital, Shandong University, Jinan, China.

To report our initial experience with a modified ureteral orthotopic reimplantation technique under pneumovesicum and compare the outcomes vs. those obtained with the Cohen technique under pneumovesicum for the correction of primary obstructive megaureter (POM) or vesicoureteral reflux(VUR) in pediatric patients. A total of 46 patients (38 POM and 8 VUR; mean age: 16. Read More

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http://dx.doi.org/10.3389/fped.2020.00062DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7068794PMC

A Novel Surgical Technique for Obstructed Megaureter: Robot-Assisted Laparoscopic Dismembered Extravesical Cross-Trigonal Ureteral Reimplantation-Short-Term Assessment.

J Endourol 2020 Mar 2;34(3):249-254. Epub 2020 Mar 2.

Departments of Urology and Pediatric Urology, Shaare Zedek Medical Center, Jerusalem, Israel.

To describe our experience with robot-assisted laparoscopic dismembered extravesical cross-trigonal ureteral reimplantation (RADECUR)-a novel minimally invasive surgical technique for treatment of obstructed megaureter. A retrospective review of our prospectively collected data, of all pediatric patients who underwent unilateral RADECUR for the treatment of primary or secondary obstructed megaureter at two medical centers during a 3-year period. Patient demographics, perioperative data, surgical technique, complications, and results are described. Read More

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http://dx.doi.org/10.1089/end.2019.0192DOI Listing
March 2020
4 Reads

Bilateral Primary Obstructive Giant Megaureter in an Adult Dog.

J Comp Pathol 2019 Jul 15;170:101-104. Epub 2019 Jul 15.

Laboratório de Patologia do Departamento de Clínica e Cirurgia Veterinárias. Electronic address:

A rare case of bilateral, primary, obstructive, giant megaureter was found during necropsy examination of an 11-year-old female German shepherd dog. On ultrasound examination and at necropsy examination, both ureters were tortuous and extensively dilated with diameter ranging from 1.86 to 4. Read More

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http://dx.doi.org/10.1016/j.jcpa.2019.06.004DOI Listing
July 2019
2 Reads

Laparoscopic extravesical ureteral reimplantation for correction of primary and secondary megaureters: Preliminary report of a new simplified technique.

J Pediatr Surg 2020 Mar 5;55(3):564-569. Epub 2019 Jul 5.

Department of Pediatric Surgery, University Hospital Vall d'Hebron, Hospital Vall d'Hebron, Passeig de la Vall d'Hebrón 119-129, 08035 Barcelona, Spain; Universitat Autónoma de Barcelona, Hospital Vall d'Hebron, Passeig de la Vall d'Hebrón 119-129, 08035, Barcelona, Spain.

Purpose: To describe a simplified surgical technique for the treatment of primary and secondary obstructed megaureters in children by laparoscopic extravesical ureteral reimplantation (LEUR) and evaluate the short-term outcomes.

Methods: Prospective study of children with primary and secondary megaureters treated at our institution between 2016 and 2018 by LEUR. A transperitoneal approach was used in all cases. Read More

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http://dx.doi.org/10.1016/j.jpedsurg.2019.05.028DOI Listing
March 2020
5 Reads

A Case of Hypotonia-Cystinuria Syndrome With Genito-Urinary Malformations and Extrarenal Involvement.

Front Pediatr 2019 9;7:127. Epub 2019 Apr 9.

Pediatric Nephrology, Dialysis and Transplant Unit, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy.

Hypotonia-Cystinuria syndrome (HCS) is a rare disease, caused by a mutation in two contiguous genes (SLC3A1 and PREPL) localized on chromosome 2p21, and it is characterized by both renal involvement with cystine stones and nervous involvement with hypotonia. We here describe a 2 years old child with HCS associated with other clinical features as congenital anomalies of kidney and urinary tract (primary obstructed megaureter, POM), cryptorchidism and cardiac involvement (patent foramen ovale with atrial septum aneurysm). To the best of our knowledge, cryporchidism and POM have never been reported before in patients with HCS. Read More

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http://dx.doi.org/10.3389/fped.2019.00127DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6465885PMC
April 2019
9 Reads

'Mini' extravesical reimplant with 'mini' tapering for infants younger than 6 months.

Authors:
C A Villanueva

J Pediatr Urol 2019 05 23;15(3):256.e1-256.e5. Epub 2019 Jan 23.

University of Nebraska Medical Center/Children's Hospital and Medical Center, 8200 Dodge Street, Omaha, NE 68114, USA. Electronic address:

Introduction: Some infants with obstructed megaureters or ectopic ureters requiring surgery undergo a cutaneous ureterostomy followed by definitive repair after 12 months of age. Since 2013, a 'mini' extravesical reimplant with or without 'mini' tapering (MER) was performed instead of cutaneous ureterostomy in such infants.

Objective: To describe the technique and outcomes for MER. Read More

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http://dx.doi.org/10.1016/j.jpurol.2019.01.004DOI Listing
May 2019
4 Reads

Fluid-structure interaction simulation of ureter with vesicoureteral reflux and primary obstructed megaureter.

Biomed Mater Eng 2018 ;29(6):821-837

School of Industrial and Information Engineering, Polytechnic University of Milan, Milan, Italy.

Two common abnormalities in ureters include primary refluxing megaureter (PRM) and primary obstructed megaureter (POM). The aim of this study was to represent the numerical simulation of the urine flow at the end of the ureter with vesicoureteral reflux (VUR) and POM during peristalsis. Methodologically, the peristalsis in the ureter wall was created using Gaussian distribution. Read More

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http://www.medra.org/servlet/aliasResolver?alias=iospress&am
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http://dx.doi.org/10.3233/BME-181026DOI Listing
March 2019
21 Reads
0.850 Impact Factor

What are the predictive factors leading to ureteral obstruction following endoscopic correction of VUR in the pediatric population?

J Pediatr Urol 2018 12 25;14(6):538.e1-538.e7. Epub 2018 May 25.

Pediatric Urology Unit, 'Bambino Gesù' Children's Hospital, Rome, Italy.

Background: It is extremely important to not only address the short-term success following endoscopic correction of vesicoureteral reflux (VUR) but also the long-term efficacy and safety of the tissue augmenting substance utilized for endoscopic correction.

Objective: This study retrospectively evaluated all cases of ureterovesical junction (UVJ) obstruction following endoscopic treatment of VUR over the last 5 years utilizing two tissue augmenting substances, with special emphasis on the safety of Vantris, and performed clinical and histological review of these patients.

Methods: The study population comprised 2495 patients who underwent endoscopic correction of VUR utilizing Deflux (1790) and Vantris (705). Read More

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http://dx.doi.org/10.1016/j.jpurol.2018.04.021DOI Listing
December 2018
12 Reads

Utility of ureteric jet: A simple yet useful tool for the evaluation of complex urogenital anomaly.

Indian J Radiol Imaging 2018 Jan-Mar;28(1):45-48

Department of Radiodiagnosis, All India Institute of Radiodiagnosis, New Delhi, India.

In infants and young children with suspicion of genitourinary tract anomalies, ultrasonography (USG) is usually the first imaging modality. Advantages of USG are well described. In the evaluation of complex congenital urogenital anomalies, ultrasound examination needs to be tailored according to the clinical suspicion and to yield maximum information. Read More

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http://www.ijri.org/text.asp?2018/28/1/45/228692
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http://dx.doi.org/10.4103/ijri.IJRI_208_17DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5894318PMC
April 2018
14 Reads

Endoscopic Management of Primary Obstructive Megaureter: A Systematic Review.

J Endourol 2018 06;32(6):482-487

Department of Urology, Naval Medical Center San Diego , San Diego, California.

Background: The gold standard treatment for primary obstructive megaureter (POM) with declining renal function, worsening obstruction, or recurrent infections is ureteral reimplantation with or without tapering. In infants, open surgery can be technically demanding and associated with significant morbidity. We conducted a systematic review of the literature with special interest in endoscopic management of POM and its outcomes. Read More

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http://dx.doi.org/10.1089/end.2017.0434DOI Listing
June 2018
12 Reads

Ureteric entrapment in sacroiliac joint causing hydroureter and ipsilateral kidney hypertrophy.

Anat Sci Int 2018 Jun 8;93(3):394-399. Epub 2017 Dec 8.

Department of Anatomy, Dokkyo Medical University, Mibu, Tochigi, 321-0293, Japan.

A unilateral megaureter was found in an elderly female cadaver during routine dissection. The left proximal ureter, which was thick and convolute, descended and entered into the pelvic cavity, where the distal ureter was attached to the posterior pelvic wall at the inlet level. Removal of connective tissue surrounding the attached region revealed ureteric entrapment in the sacroiliac joint. Read More

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http://dx.doi.org/10.1007/s12565-017-0425-7DOI Listing
June 2018
13 Reads

Unconventional Surgical Strategies for the Obstructed Megaureter-What are the Options and When Should We Use Them?

Authors:
Martin Kaefer

J Urol 2017 11 22;198(5):995-996. Epub 2017 Sep 22.

Department of Urology, Indiana University School of Medicine, Indianapolis, Indiana.

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http://dx.doi.org/10.1016/j.juro.2017.08.082DOI Listing
November 2017
23 Reads

Urolithiasis secondary to primary obstructive megaureter in an adult: a case report.

J Med Case Rep 2017 Jul 1;11(1):177. Epub 2017 Jul 1.

Department of urology, Hassan II University Hospital, Fez, Morocco.

Background: Primary obstructive megaureter is relatively uncommon in adults. This condition usually regresses spontaneously or is treated during infancy. It can remain asymptomatic for decades until adulthood when symptoms may manifest in the event of complications or during a routine radiologic imaging. Read More

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http://dx.doi.org/10.1186/s13256-017-1342-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5493845PMC
July 2017
42 Reads

Laparoscopic-Assisted Extravesical Ureteral Reimplantation and Extracorporeal Ureteral Tapering Repair for Primary Obstructive Megaureter in Children.

J Laparoendosc Adv Surg Tech A 2017 Aug 8;27(8):851-857. Epub 2017 Jun 8.

Department of Pediatric Surgery and Urology, University Hospital of Vall d'Hebron , Barcelona, Spain .

Background: Open surgery is a preferred treatment for primary obstructive megaureter (POM) in cases where the conservative treatment fails, with reported success rates of 90%-96%.

Objective: To describe our initial experience in the treatment of POM by laparoscopic-assisted extracorporeal ureteral tapering repair (EUTR) and laparoscopic ureteral extravesical reimplantation (LUER) by following Lich Gregoir technique as an alternative to open surgery.

Design, Setting, And Participants: A total of 7 patients with POM underwent laparoscopic-assisted extracorporeal ureteral tapering repair and ureteral extravesical reimplantation by following Lich Gregoir technique between 2011 and 2014. Read More

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http://dx.doi.org/10.1089/lap.2016.0456DOI Listing
August 2017
27 Reads

Side-to-Side Refluxing Nondismembered Ureterocystotomy: A Novel Strategy to Address Obstructed Megaureters in Children.

J Urol 2017 11 29;198(5):1159-1167. Epub 2017 May 29.

Division of Urology, The Hospital for Sick Children and Department of Surgery, University of Toronto, Toronto, Ontario, Canada. Electronic address:

Purpose: A nonrefluxing megaureter is a relatively common cause of antenatal hydronephrosis. Although nonoperative management is favored, surgical intervention is sometimes warranted. However, there is controversy regarding the best approach, particularly in young children. Read More

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http://dx.doi.org/10.1016/j.juro.2017.05.078DOI Listing
November 2017
30 Reads

Novel technique of laparoscopic extravesical ureteric reimplantation in primary obstructive megaureter.

Urol Ann 2017 Apr-Jun;9(2):150-152

Department of Urology, Yenepoya Medical College, Mangalore, Karnataka, India.

Objective: This study aims to demonstrate a novel laparoscopic technique of tapering megaureter without disrupting the blood supply and disconnecting the ureter.

Materials And Methods: Eight cases of primary obstructive megaureter in the age group of 14-22 years underwent laparoscopic extravesical ureteric reimplantation between August 2011 and July 2015 using our novel technique. Five patients had obstruction on left side and three on right side. Read More

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http://dx.doi.org/10.4103/0974-7796.204182DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5405658PMC
May 2017
22 Reads

Boari flap reconstruction in a male infant with solitary kidney and associated megaureter.

BMJ Case Rep 2016 Dec 15;2016. Epub 2016 Dec 15.

Department of Urology, King George's Medical University, Lucknow, Uttar Pradesh, India.

A 1-year-old male infant presented with fever and abdominal lump for 3 months with increased leucocyte count (15 300/mm) and serum creatinine (0.83 mg%). Abdominal ultrasound and renal scan demonstrated solitary left kidney with dilated tortuous left ureter. Read More

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http://dx.doi.org/10.1136/bcr-2016-217577DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5174856PMC
December 2016
47 Reads

Intravesical ureteric reimplantation for primary obstructed megaureter in infants under 1 year of age.

J Pediatr Urol 2017 Feb 24;13(1):47.e1-47.e7. Epub 2016 Oct 24.

Department of Paediatric Surgery and Urology, Princess Margaret Hospital for Children, Perth, Australia; School of Surgery, Faculty of Medicine, Dentistry and Health Sciences, University of Western Australia, Perth, Australia.

Purpose: This study aimed to assess the outcome of intravesical ureteric reimplantation for primary obstructed megaureter (POM) performed in infants under 1 year of age.

Materials And Methods: A retrospective cohort study was carried out of all infants undergoing intravesical ureteric reimplantation surgery for POM at two pediatric centers in the 12 years between 2003 and 2014. Outcomes were compared with those of children aged over 1 year undergoing intravesical reimplantation for POM during this period. Read More

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http://dx.doi.org/10.1016/j.jpurol.2016.09.009DOI Listing
February 2017
48 Reads

Modified ureteral orthotopic reimplantation method for managing infant primary obstructive megaureter: a preliminary study.

Int Urol Nephrol 2016 Dec 2;48(12):1937-1941. Epub 2016 Sep 2.

Department of Pediatric Surgery, Provincial Hospital Affiliated To Shandong University, Jinan, 250021, China.

Purpose: To describe a modified ureteral orthotopic reimplantation method in infant with primary obstructive megaureter (POM) and report our initial experience.

Methods: Thirteen children with POM (range 1-7 months) underwent modified transvesical ureteral implantation surgery. Treatment consists of transecting the ureter proximal to the obstruction and performing orthotopic reimplantation in end freely fashion with distal ureter protruding into the bladder, providing dilated ureteral diameter: ureteral exposure length in bladder ratio of 1:1. Read More

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http://dx.doi.org/10.1007/s11255-016-1409-6DOI Listing
December 2016
57 Reads

The embedded nipple: An optimal technique for re-implantation of primary obstructed megaureter in children.

Arab J Urol 2016 Jun 20;14(2):171-7. Epub 2016 May 20.

Department of Urology, Faculty of Medicine, Alexandria University, Alexandria, Egypt.

Objectives: To present a novel ureteric re-implantation technique for primary obstructed megaureter (POM) that ensures success in the short- and long-term, as conventional techniques are not ideal for megaureters especially in children, with ureteric stenosis and reflux being common complications after re-implantation.

Patients And Methods: Between 2009 and 2012, 22 paediatric patients with POM were enrolled. We performed a new technique for re-implantation of these ureters to ensure minimal incidence of ureteric strictures and easy subsequent endoscopic access. Read More

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http://dx.doi.org/10.1016/j.aju.2016.04.001DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4963169PMC
June 2016
32 Reads

'Mini reimplantation' for the management of primary obstructed megaureter.

Authors:
Ramesh Babu

J Pediatr Urol 2016 Apr 8;12(2):103.e1-4. Epub 2015 Oct 8.

Department of Pediatric Urology, Sri Ramachandra Medical College and Research Institute, Porur, Chennai 600116, India. Electronic address:

Introduction: The management of primary obstructed megaureter (POM) ranges from temporary double-J stenting to conventional ureteric reimplantation with tapering. Of late, several authors have favored refluxing reimplantation. In the present study the outcomes of 'mini reimplantation', where no tapering or advancement of the ureter was performed, have been analyzed. Read More

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http://dx.doi.org/10.1016/j.jpurol.2015.08.017DOI Listing
April 2016
21 Reads

Obstructed megaureter in the newborn--Repair by temporary refluxing megaureter reimplantation.

J Pediatr Urol 2015 Jun;11(3):110-2

Department of Urology, Lurie Children's Hospital, Northwestern University, USA. Electronic address:

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http://dx.doi.org/10.1016/j.jpurol.2015.05.001DOI Listing
June 2015
11 Reads

[Transperitoneal laparoscopic ureteral reimplantation with extracorporeal tailoring and direct nipple ureteroneocystostomy for adult obstructive megaureter].

Beijing Da Xue Xue Bao Yi Xue Ban 2014 Aug;46(4):511-4

Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China.

This paper focuses on a novel modified technique about the treatment of adult obstructed megaureter by the transperitoneal laparoscopic procedure. With the improvement of the laparoscopic surgery, many urological surgeries can be safely and effectually performed by laparoscopic approach. The previously reported laparoscopic methods for treatment of adult obstructed megaureter were complex and time-consuming. Read More

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August 2014
43 Reads

The retroperitoneal, inguinal approach to distal part of the ureter.

Cent European J Urol 2014 17;67(1):108-11. Epub 2014 Apr 17.

Department of Pediatric Urology, Collegium Medicum, Jagiellonian University in Cracow, Poland.

Introduction: The inguinal approach to the distal part of the ureter allows the surgeon to perform various types of procedures and is considered to be one of the minimally invasive techniques in pediatric surgery. We aim to describe our initial experience with the surgery of the distal ureter performed through an inguinal mini-incision.

Material And Methods: Between March 2012 and June 2013, 8 patients were treated using a minimally invasive inguinal technique. Read More

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http://dx.doi.org/10.5173/ceju.2014.01.art26DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4074723PMC
July 2014
23 Reads

Re. 'BAPU consensus statement on the management of the primary obstructive megaureter'.

J Pediatr Urol 2014 Aug 9;10(4):787. Epub 2014 May 9.

Paediatric Urology SpR, Southampton General Hospital, Tremona Road, Southampton SO166YD, United Kingdom. Electronic address:

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http://dx.doi.org/10.1016/j.jpurol.2014.03.009DOI Listing
August 2014
15 Reads

Refluxing ureteral reimplantation: a logical method for managing neonatal UVJ obstruction.

J Pediatr Urol 2014 Oct 28;10(5):824-30. Epub 2014 Feb 28.

Pusan National University Hospital & College of Medicine, Busan, Republic of Korea.

Objective: An obstructed megaureter can be managed using a number of techniques, with the primary goal being to minimize the potential for further injury to the affected kidney. Classically, these obstructed ureters have been treated using cutaneous ureterostomy. However, this technique has certain limitations including the potential for stenosis. Read More

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http://dx.doi.org/10.1016/j.jpurol.2014.01.027DOI Listing
October 2014
44 Reads

Diverticulocystoplasty with bilateral ureteric reimplantation: management in a rare case of combined congenital large paraureteric diverticulum with bilateral obstructive megaureter.

Indian J Surg 2013 Jun 12;75(Suppl 1):305-7. Epub 2012 Jul 12.

Department of Urology, RML Hospital and PGIMER, New Delhi, 110001 India.

A large congenital paraureteric diverticulum has not been reported earlier in combination with bilateral obstructed megaureter. We present one such case in an adolescent male with decreased bladder capacity and renal failure. A single sitting surgical procedure included diverticulocystoplasty with bilateral ureteric reimplantation. Read More

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http://dx.doi.org/10.1007/s12262-012-0699-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3693326PMC
June 2013
14 Reads

Primary obstructed megaureter (POM) in children.

Authors:
V Nagy M Baca A Boor

Bratisl Lek Listy 2013 ;114(11):650-6

Unlabelled: The aim of this study was to analyze the results of surgical and conservative treatment of non-refluxing POM. In the period 2000-2009, 45 children (52 ureters) were treated, the average age was 5.8 months (±10. Read More

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http://dx.doi.org/10.4149/bll_2013_139DOI Listing
February 2014
20 Reads

Ureterovesical junction obstruction causes increment in smooth muscle contractility, and cholinergic and adrenergic activity in distal ureter of rabbits.

J Pediatr Surg 2013 Sep;48(9):1954-61

Department of Pediatric Surgery, Hacettepe University, Faculty of Medicine, Sihhiye, Ankara, 06100 Turkey. Electronic address:

Background/purpose: The controversy in management of primary obstructed megaureter necessitates further elucidation of the underlying pathophysiology. We evaluated smooth muscle contractility, and cholinergic, adrenergic and serotonergic activity of rabbit distal ureters after ureterovesical junction (UVJ) obstruction.

Methods: Sham (SH) operation, partial obstruction (PO) and complete obstruction (CO) of the right UVJ were performed in rabbits. Read More

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http://dx.doi.org/10.1016/j.jpedsurg.2013.01.030DOI Listing
September 2013
56 Reads

Laparoscopic ureteral reimplantation with extracorporeal tailoring and direct nipple ureteroneocystostomy for adult obstructed megaureter: a novel technique.

Urology 2013 Nov 12;82(5):1171-4. Epub 2013 Sep 12.

Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Urological Cancer Center, Beijing, China.

Introduction: To describe a novel technique using extracorporeal tailoring and an inverted ureteral nipple to perform laparoscopic transperitoneal ureteral reimplantation for adult obstructed megaureter and our initial experience with 10 patients.

Technical Considerations: Ten patients (mean age 39.2 years [range, 21-62]) with adult obstructed megaureter underwent transperitoneal laparoscopic ureteral reimplantation by a 3- or 4-port technique. Read More

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http://dx.doi.org/10.1016/j.urology.2013.07.019DOI Listing
November 2013
119 Reads

Resolution of primary non-refluxing megaureter: an observational study.

J Pediatr Surg 2013 Feb;48(2):380-3

Department of Paediatric Urology, Royal Manchester Children's Hospital, Manchester, UK.

Aim: A prospective review of conservative management of primary non-refluxing megaureters (PM) was performed to determine the time taken for resolution (TTR) and complications.

Material And Methods: Patient details were obtained from a prospectively maintained database from January 1, 2003, to December 31, 2011. The clinical features of USS and MAG3 findings were analyzed. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00223468120092
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http://dx.doi.org/10.1016/j.jpedsurg.2012.11.017DOI Listing
February 2013
17 Reads

Concomitant endoureterotomy and dextranomer/hyaluronic acid subureteral injection for management of obstructive refluxing megaureter.

J Endourol 2012 Apr;26(4):318-24

Pediatric Urology Research Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran.

Purpose: To present the results of our experience with combined endoureterotomy and endoscopic injection of dextranomer/hyaluronic acid (Deflux) for the treatment of primary obstructive refluxing megaureter (PORM).

Patients And Methods: Eighteen children (12 female, 6 male; mean age-14 months) with 20 PORM units underwent concomitant endoureterotomy and endoscopic subureteral Deflux injection. All patients underwent endoureterotomy at the 6-o'clock position with insertion of a 3F Double-J ureteral stent into the obstructed segment of ureter and subureteral injection of Deflux at the 5-o'clock and 7-o'clock positions. Read More

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http://dx.doi.org/10.1089/end.2011.0256DOI Listing
April 2012
31 Reads

Severe primary obstructive megaureter in the first year of life: preliminary experience with endoscopic balloon dilation.

J Endourol 2012 Apr 7;26(4):325-9. Epub 2011 Dec 7.

Surgical Unit of the Pediatric Renal Transplant and Correlated Pathologies, Bambino Gesù Children's Hospital and Research Institute, Piazza S. Onofrio no. 4, Rome, Italy.

Background And Purpose: Although conservative management is indicated in most cases of primary obstructed megaureter (POM), surgery is still indicated when POM is associated with increasing dilation, symptoms, or progressive renal damage. Surgery is associated with a significant rate of complications, however, especially in the case of very large ureter in the first year of life. A valid alternative could be endoscopic high pressure balloon dilation (EHPBD) of the vesicoureteral junction (VUJ). Read More

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http://dx.doi.org/10.1089/end.2011.0399DOI Listing
April 2012
14 Reads

[Management and follow-up of antenatally diagnosed primary megaureters].

Prog Urol 2011 Jul 2;21(7):486-91. Epub 2011 Apr 2.

Service de pédiatrie, unité de néonatalogie, CHU Tahar-Sfar, Mahdia 5111, Tunisie.

Introduction And Objectives: To study the diagnostic and outcome aspects of antenatally diagnosed primary megaureters and analyse the results of the postnatal medicochirurgical management.

Patients And Methods: The authors report a retrospective analysis of 12 patients been born between 1998 and 2009 with primary megaureter antenatally diagnosed between 20 and 32weeks of gestation. A postnatal radiological assessment comprising urinary tract ultrasound, DTPA or MAG3 renal scintigraphy, retrograde cystography, DMSA renal scintigraphy and intravenous urography was performed. Read More

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http://dx.doi.org/10.1016/j.purol.2011.02.011DOI Listing
July 2011
13 Reads

Upper pole multicystic dysplasia and ureteropelvic junction obstruction associated with obstructive-refluxing megaureter in a neonate with a single kidney.

Can J Urol 2010 Dec;17(6):5472-4

Department of Urology, Division of Surgery, Soroka University Medical Center, Ben Gurion University, Beer Sheva, Israel.

A 20-day-old male neonate presented with fever and hydronephrosis. Evaluation revealed that the patient had a single left kidney and a rare combination of multiple congenital malformations: upper pole segmental multicystic dysplasia, ureteropelvic junction obstruction, and an obstructive and refluxing megaureter (ureterovesical junction obstruction). We performed percutaneous drainage of the infected and obstructed upper collecting system and then used a sequential approach to manage the patient's anomalies. Read More

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December 2010
14 Reads

Acute management of neonatal respiratory failure due to crossed ectopic obstructed megaureter in a duplicated pelvic kidney.

J Pediatr Urol 2011 Feb 3;7(1):83-5. Epub 2010 Nov 3.

University of Vermont School of Medicine, Burlington, VT 05405-1742, USA.

Respiratory distress due to urinary tract obstruction can be a urologic emergency. We describe the diagnostic and surgical management of severe respiratory distress in a neonate due to a crossed ectopic obstructed megaureter in a duplicated pelvic kidney. Read More

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http://dx.doi.org/10.1016/j.jpurol.2010.09.017DOI Listing
February 2011
14 Reads

Robot-assisted tapered ureteral reimplantation for congenital megaureter.

Urology 2011 Mar;77(3):742-5

Scott Department of Urology, Baylor College of Medicine, 6620 Main Street, Suite 1325, Houston, TX 77030, USA.

Objective: To discuss the clinical implications of primary obstructed congenital megaureter in the adult and illustrate a minimally-invasive approach for surgical intervention.

Methods: We present the case of a 51-year-old man with a longstanding history of symptomatic congenital megaureter, illustrating an approach for robot-assisted tapered ureteral reimplantation. Ureteral dissection, tapering, and nonrefluxing ureteroneocystostomy were all completed using a robot-assisted laparoscopic technique. Read More

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http://dx.doi.org/10.1016/j.urology.2010.05.051DOI Listing
March 2011
12 Reads

The utilization of stents in the management of primary obstructive megaureters requiring intervention before 1 year of age.

J Pediatr Urol 2011 Apr 21;7(2):198-202. Epub 2010 May 21.

Department of Paediatric Urology, Southampton University Hospital Trust, Southampton SO16 6YD, UK.

Objective: To analyse the long-term outcome of 16 infants with primary obstructive megaureter managed by (endoscopic or open) stenting over a 10-year period.

Methods: A retrospective case-note and imaging review was performed between 1997 and 2007. Data are presented as medians (range) and were compared using the Mann-Whitney test. Read More

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http://dx.doi.org/10.1016/j.jpurol.2010.04.015DOI Listing
April 2011
30 Reads

[Complete ureteral triplication--an anatomic rarity].

Aktuelle Urol 2010 Mar 17;41(2):131-3. Epub 2009 Nov 17.

Klinikum Kempten-Oberallgäu, Urologische Abteilung.

Introduction: Ureteral duplications are a common malformation of the urinary tract. A complete triplication however, is very rare.

Case Report: We report the case of a 26-year-old female patient admitted because of a septic disorder. Read More

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http://dx.doi.org/10.1055/s-0029-1224709DOI Listing
March 2010
12 Reads

Use of Hem-o-lok Clips for Vascular Control During Retroperitoneoscopic Nephrectomy in Children.

J Endourol 2009 Jul 20. Epub 2009 Jul 20.

Department of Urology and Transplantation Surgery, Institute of Kidney Diseases and Research Centre , Institute of Transplantation Sciences, Ahmedabad, India .

Abstract Aim: To evaluate safety and efficacy of 5-mm Hem-o-lok clips in children undergoing retroperitoneoscopic nephrectomy. Material and Methods: Twenty-four retroperitoneoscopic nephrectomies were performed between September 2004 and August 2007. The indications of nephrectomy were ureteropelvic junction obstruction, reflux nephropathy, ectopic ureteral opening with renal dysplasia, and stone disease with pyonephrosis and primary obstructed megaureter with renal dysplasia. Read More

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http://dx.doi.org/10.1089/end.2008.0508DOI Listing
July 2009
13 Reads

Laparoscopic removal of a pelvic cyst associated with obstructed megaureter and dysplastic renal remnant.

Can Urol Assoc J 2009 Apr;3(2):159-62

Royal Alexandra Hospital, Division of Urology, Department of Surgery, University of Alberta, Edmonton, Alta.

We report a case of a 41-year-old man with a solitary functioning left kidney and history of chronic pelvic discomfort associated with lower urinary tract symptoms. Imaging revealed a large cystic structure in the pelvis attached to a dilated tortuous ureter on the right with congenital absence of the right kidney. The patient underwent laparoscopic removal of the pelvic cyst and dilated right ureter. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2666905PMC
http://dx.doi.org/10.5489/cuaj.1053DOI Listing
April 2009
15 Reads

Primary non-refluxing megaureters.

Authors:
E Merlini P Spina

J Pediatr Urol 2005 Dec 5;1(6):409-17. Epub 2005 Jul 5.

Department of Paediatric Surgery, Ospedale Maggiore della Carità Hospital, Corso Mazzini 18, 28100 Novara, Italy.

Megaureters may be primary or secondary, and the dilatation may be due to obstruction or reflux, or both or neither. The cause of primary obstructed megaureter is the aperistaltic and narrowed pre-vesical portion of the ureter. The inner sheath of the terminal ureter generally shows a reduced amount of longitudinal smooth muscle bundles and an increased amount of collagen. Read More

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http://dx.doi.org/10.1016/j.jpurol.2005.04.007DOI Listing
December 2005
22 Reads

[Is effective the initial management of primary nonrefluxing megaureter with double-J stent?].

Cir Pediatr 2008 Jan;21(1):32-6

Sección de Urología, Servicio de Cirugía Pediátrica, Hospital Universitario 12 de Octubre, Madrid.

Background: Initial management of patients with primary nonrefluxing megaureter (PNRM) associated with impaired renal function or with high risk rate of decreased kidney function can be a dilemma. We present our experience in the use of double -J stent in these patients to evaluate the role as a method to decompressing the system, to prevent function loss or to temporize surgical treatment.

Methods: In the period 1996-2006 27 patients were diagnosed of PNRM. Read More

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January 2008
15 Reads

Endoureterotomy for treatment of primary obstructive megaureter in children.

J Endourol 2007 Jul;21(7):743-9

Pediatric Urology Research Center, Department of Urology, Children's Hospital Medical Center, Tehran University of Medical Sciences, Tehran, Iran.

Purpose: To describe a new approach to the treatment of primary obstructive megaureter (POMU) using endoscopic endoureterotomy. The results obtained with this technique are reviewed with long-term follow-up.

Patients And Methods: A total of 47 children (mean age 3. Read More

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http://dx.doi.org/10.1089/end.2006.0330DOI Listing
July 2007
20 Reads

Interstitial cells of Cajal network in primary obstructive megaureter.

Pediatr Med Chir 2007 Jan-Feb;29(1):28-31

Dipartimento di Scienze Pediatriche Mediche e Chirurgiche, Unità Operativa di Chirurgia Pediatrica, Università di Messina.

Objectives: Recent reports showed an altered density of interstitial cells of Cajal (ICCs) and of peripherin immunoreactive nerve fibres in obstructed uretero-pelvic junction. Our aim was to investigate ICCs immunoexpression and ureteral innervation in primary obstructive megaureter (POM).

Methods: 8 specimens of POM were obtained during tailoring. Read More

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August 2007
11 Reads

Myocyte apoptosis in primary obstructive megaureters: the role of decreased vascular and neural supply.

J Urol 2007 Jul 17;178(1):259-64; discussion 264. Epub 2007 May 17.

Department of Urology, Pediatric Urology Research Center, Children's Hospital, and Tehran University of Medical Sciences, Tehran, Iran.

Purpose: We compared myocyte apoptosis index, microvessel density and nerve supply as well as muscular and collagen composition in the obstructed ureteral endings of children with primary obstructive megaureter and normal controls.

Materials And Methods: Tissue specimens were obtained during ureteral reimplantation in 16 patients with primary obstructive megaureter. For the control group normal ureteral endings were taken at autopsy from 19 age and sex matched children. Read More

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http://dx.doi.org/10.1016/j.juro.2007.03.054DOI Listing
July 2007
20 Reads

Transvaginal sonography in the morphological and functional assessment of segmental dilation of the distal ureter.

Ultrasound Obstet Gynecol 2006 Apr;27(4):449-51

Division of Urogynecology, Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan.

Primary megaureter presents a spectrum of findings ranging from mild, clinically unimportant, stable ureterectasis to severe, progressive obstructive hydroureteronephrosis. We report a patient with a double uterus and ipsilateral renal dystrophy. A previous imaging study had revealed a double uterus and obstructed left hemivagina, into which a single vaginal ectopic ureter inserted. Read More

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http://dx.doi.org/10.1002/uog.2719DOI Listing
April 2006
15 Reads

Megaureter visualization on Tc-99m DMSA scintigraphy.

Ann Nucl Med 2005 Jul;19(5):421-3

Department of Nuclear Medicine, Ankara Training and Research Hospital, Ankara, Turkey.

We present a patient with left-sided obstructed megaureter secondary to neuropathic bladder. He was referred for technetium-99m dimercaptosuccinic acid ((99m)Tc-DMSA) renal cortical scintigraphy to evaluate renal cortical function. Images obtained 4 hr after injection showed significant activity in the dilated left ureter. Read More

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http://dx.doi.org/10.1007/BF03027409DOI Listing
July 2005
15 Reads

[Obstructive uropathy in childhood].

Aktuelle Urol 2005 Aug;36(4):317-28

Klinik und Poliklinik für Urologie, Universitätsklinikum Münster.

"Obstructive uropathy" is a generic term which combines different diseases in infants and childhood. Both the upper and lower urinary tract may be affected. Diseases of the urinary tract can cause an intrinsic obstruction. Read More

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http://dx.doi.org/10.1055/s-2005-870934DOI Listing
August 2005
17 Reads