Acute pain crisis as a presentation of primary megaureter in children

Anderson, Christopher B.; Tanaka, Stacy T.; Pope, John C.; Adams, Mark C.; Brock, John W.; Thomas, John C.

doi:10.1016/j.jpurol.2011.05.012

Cited by 8 publications

(5 citation statements)

References 24 publications

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“…In der Literatur zeigt ein vergleichsweiser geringer Prozentsatz von Patienten mit Megaureteren akute Flankenschmerzen: 2 % bis 17 % [27,30]. In einer aktuellen Fallserie präsentierten sich 10 % der Kinder mit Megaureteren in einer akuten Schmerzkrise [30].…”

Section: Megaureterenunclassified

“…In einer aktuellen Fallserie präsentierten sich 10 % der Kinder mit Megaureteren in einer akuten Schmerzkrise [30]. Diese waren in 90 % männlich und im medianen Alter von 6,5 Jahren (Range 40-208 Monate) [30]. Diagnostik Die Diagnostik orientiert sich am akuten klinischen Bild, wobei die Nephrosonografie im Vordergrund steht.…”

Section: Megaureterenunclassified

“…2). In einer Serie von Anderson aus dem Jahre 2012 wurden 30 % der symptomatischen Kinder mit Megaureteren notfallmäßig wegen nicht beherrschbarer Schmerzen mittels Ureterschienung abgeleitet, 60 % der Kinder nachfolgend zügig reimplantiert, woraufhin die Flankenschmerzen sistierten, in mehr als 30 % war ein weiteres konservatives Follow-up möglich [30]. In der Literatur finden sich Fallserien symptomatischer Megaureteren im Erwachsenenalter (median 30 Jahre, Range 13-52J.)…”

Section: Megaureterenunclassified

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Akute Flankenschmerzen im Kindes- und Jugendalter

Ebert¹

2017

Aktuel Urol

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Section: Megaureterenunclassified

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Akute Flankenschmerzen im Kindes- und Jugendalter

Ebert¹

2017

Aktuel Urol

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“…In adults and adolescents with primary megaureter, large stones can develop in the dilated portion of the ureter due to urinary stasis (Delakas et al 2002;Hemal et al 2003;Rosenblatt et al 2009). Cases of megaureter because of uretropelvic junction obstruction can present with acute flank pain crisis during childhood (Hanna et al 1976;Anderson et al 2012). Congenital megaureter is a diagnosis that urologists and radiologists need to consider in the setting of isolated distal ureteral dilation.…”

Section: Primary Megauretermentioning

confidence: 99%

Kidney, Urinary Bladder, and Ureter

Ardalan

2016

Bergman's Comprehensive Encyclopedia of Human Anatomic Variation

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“…It comprises 8-23 % of cases with hydronephrosis detected on prenatal ultrasonography (US) [1]. A variety of etiologies can cause hydroureter, including a primary defect in the development of distal ureter and ureterovesical junction, or can occur secondary to other disorders such as ectopic ureter, neurogenic bladder, and diabetes insipidus [2].…”

Section: Introductionmentioning

confidence: 99%

Drainage-related ultrasonography (DRUS): a novel technique for discriminating obstructive and nonobstructive hydroureters in children

et al. 2014

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Background Despite advances in urologic imaging, the paucity of an optimal technique that accurately clarifies obstructive and nonobstructive hydroureter exists. Objective This study was conducted to introduce a novel and modified ultrasonographic technique, known as drainage-related ultrasonography (DRUS), discriminating obstructive and nonobstructive, nonrefluxing hydroureter. Materials and methods A total of 358 children (mean age, 3.7 years) with 418 nonrefluxing hydroureter were included. These children were composed of two groups of obstructive nonrefluxing (141 children with 157 dilated ureters) and nonobstructive, nonrefluxing (217 children with 261 hydroureter). The definite diagnosis regarding the subtype of hydroureter was derived from appropriate investigation. The maximum diameter of the dilated ureter, which was observed on ultrasonography, was recorded before and after 3 h of catheterization, as D1 and D2, respectively. To assess the D ratio, a formula was developed, that is, [(|D1 -D2|)/D1] 9 100. Values were recorded and cutoff points were set to discriminate between subtypes. Results Obstructive versus nonobstructive subtypes of nonrefluxing hydroureter were clarified with 78.5 % sensitivity and 83.4 % specificity, by setting a cutoff point of 22 % for the D ratio. Regardless of the cutoff point assigned to the reduction in D (D2 compared with D1), DRUS revealed 93.9 % sensitivity, 80.6 % specificity, 63.2 % positive predictive value, and 97.4 % negative predictive value in discriminating upper from lower obstruction. Conclusion DRUS affords favorable results in terms of differentiating between obstructive and nonobstructive, nonrefluxing hydroureter, as well as between upper and lower obstruction in obstructive cases. It has the potential to become an efficient imaging modality in the diagnostic algorithm of hydroureter.Keywords Urinary tract obstruction Á Hydroureter Á Technetium-99 m DTPA Á Radioisotope renography Á Urinary bladder Á Drainage Sommario Background Nonostante i progressi nella diagnostica per immagini urologica, vi è la mancanza di una tecnica ottimale che definisca con precisione l'idrouretere ostruttivo e non-ostruttivo. Obiettivi Questo studio è stato condotto per introdurre una nuova e modificata tecnica ecografica (US), conosciuta (2015) 18:117-125 DOI 10.1007/s40477-014-0128-z come drenaggio correlato all'ecografia (DRUS), per discriminare l'idrourete ostruttivo da quello non-ostruttivo. Materiali e metodi Un totale di 358 bambini (età media: 3,7 anni) con 418 idroureteri senza reflussi sono stati inclusi nello studio. Questi bambini sono stati divisi in due gruppi, con forme ostruttive, senza reflusso (141 bambini con 157 ureteri dilatati) e con forme non-ostruttive, senza reflusso (217 bambini con 261 idroureteri). La diagnosi definitiva riguardo il sottotipo di idrouretere è stata fatta con indagini appropriate. Il diametro massimo dell'uretere dilatato misurato con ecografia, è stato registrato prima e tre ore dopo la cateterizzazione, rispettivamente come D1...

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Acute pain crisis as a presentation of primary megaureter in children

Cited by 8 publications

References 24 publications

Akute Flankenschmerzen im Kindes- und Jugendalter

Akute Flankenschmerzen im Kindes- und Jugendalter

Kidney, Urinary Bladder, and Ureter

Drainage-related ultrasonography (DRUS): a novel technique for discriminating obstructive and nonobstructive hydroureters in children

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