Hydronephrosis in Renal Ectopia: Incidence, Etiology and Significance

Gleason, Philip E.; Kelalis, Panayotis P.; Husmann, Douglas A.; Kramer, Stephen A.

doi:10.1016/s0022-5347(17)35338-7

Cited by 145 publications

(80 citation statements)

References 7 publications

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“…A high incidence of associated urological abnormalities has been reported in patients with RE. 1,4,7 The increased incidence of VUR in patients with RE was initially reported by Kramer and Kelalis, 9 who studied a small group of symptomatic patients. In their study VCUG indicated an incidence of 52% and 70% in C-RE and S-RE, respectively.…”

Section: Discussionmentioning

confidence: 90%

“…1 Crossed ectopic kidney is a rare anomaly, with an estimated incidence of 1 in 7500 autopsies or 1 in 14 000 pediatric admissions. [2][3][4] Some screening studies have reported the incidence of RE to be 1 in 5000 patients.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4] Some screening studies have reported the incidence of RE to be 1 in 5000 patients. 1,5 Most cases of RE remain asymptomatic and the condition is incidentally discovered during screening for associated congenital anomalies or during imaging for other purposes. 6 In previous studies, a high incidence of associated urological abnormalities was reported in children with RE.…”

Section: Introductionmentioning

confidence: 99%

“…6 In previous studies, a high incidence of associated urological abnormalities was reported in children with RE. 7 Hydronephrosis is the most common significant finding in RE, 1 and the presence of associated vesico-ureteral reflux (VUR) is estimated in 25-70% of cases. 4,[7][8][9] For these reasons, prenatal or incidental diagnosis of RE is considered an absolute indicator for an early and complete investigation of the urinary tract, even in asymptomatic children.…”

Section: Introductionmentioning

confidence: 99%

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Is a complete urological evaluation necessary in all newborns with asymptomatic renal ectopia?

Arena

Paolata

et al. 2007

Int J of Urology

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Aim:To evaluate if a complete urological screening is justified by potential urological anomalies in newborns or infants with asymptomatic renal ectopia (RE). Methods: The database records of 60 consecutive neonatal cases of RE diagnosed at the authors' hospital from 1990 to 2004 were retrospectively reviewed. Results: At diagnosis, mean patient age was 1.6 months. In 58 of 60 patients, the suspected diagnosis of RE was made during prenatal or postnatal screening ultrasonography, including two newborns with anorectal malformation. There were 24 patients with crossed RE (C-RE) and 36 patients with simple RE (S-RE). A solitary RE was present in two patients. The most frequent associated urological abnormality was vesicoureteral reflux (37.5% of C-RE and 16.6% of S-RE). Hydronephrosis was detected in seven RE and five contralateral kidneys. An obstructive megaureter was present in one patient with C-RE. In 40% of S-RE and 92.9% of C-RE, the 99m Tc DMSA documented reduction of function of RE. The longitudinal diameter of the ectopic kidney was significantly smaller than the contralateral one. Other non-renal diseases were present in 15% of patients, of which the most frequent was cryptorchidism (6.6%). Conclusions: A complete urological evaluation is necessary in newborns with C-RE for the high incidence of associated urological anomalies, of which VUR is the most frequent. A complete urological evaluation is also reasonable in patients with S-RE who have a pelvic dilatation. No diagnosis or treatment of the associated urological diseases, in consideration of congenital decreased function of the ectopic kidney, might predispose these children to improvement of renal function impairment.

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Section: Discussionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Is a complete urological evaluation necessary in all newborns with asymptomatic renal ectopia?

Arena

Paolata

et al. 2007

Int J of Urology

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“…Ectopic pelvic kidneys are uncommon, presenting in 1/10,000 patients whilst autopsy studies estimate their true prevalence as up to 1/1000 [52].…”

Section: Ectopic Pelvic Kidneysmentioning

confidence: 99%

Challenging situations in partial nephrectomy

Raison

Doeuk

Malthouse

et al. 2016

International Journal of Surgery

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Although most partial nephrectomies are performed as primary procedures in the elective or semi-imperative setting on kidneys with relatively normal anatomy, this is not always the case.The indications for partial nephrectomy continue to expand and it is becoming particularly relevant in patients with single functioning kidneys, poor kidney function, anatomical anomalies and hereditary syndromes predisposing to multiple kidney cancers, such as Von Hippel-Lindau syndrome. These, along with previous abdominal surgery, pose surgical challenges. In this article we offer advice as to how to tackle these unusual situations.An ability to master the whole range of indications will allow the modern upper renal tract surgeon to offer partial nephrectomy to a wider range of patients.

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Kidney, Urinary Bladder, and Ureter

Ardalan

2016

Bergman's Comprehensive Encyclopedia of Human Anatomic Variation

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Hydronephrosis in Renal Ectopia: Incidence, Etiology and Significance

Cited by 145 publications

References 7 publications

Is a complete urological evaluation necessary in all newborns with asymptomatic renal ectopia?

Is a complete urological evaluation necessary in all newborns with asymptomatic renal ectopia?

Challenging situations in partial nephrectomy

Kidney, Urinary Bladder, and Ureter

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