Crossed renal ectopia in children

Kheradpir, M. H.; Bodaghi, E

doi:10.1007/bf00181009

Cited by 5 publications

(10 citation statements)

References 11 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%

“…In their study VCUG indicated an incidence of 52% and 70% in C-RE and S-RE, respectively. Hendren et al 3 observed reflux in six of nine children and Kheradpir et al 4 in three of five children with C-RE. Our data, according to Guarino et al,7,8 show that the risk of VUR, even if significant, was lower than what has been previously reported and it differs according to the type of RE.…”

Section: Discussionmentioning

confidence: 96%

“…Our data suggest that ectopic kidneys are more disease-prone than are normal kidneys: they are often hypoplastic or dysplastic. 4 On this basis, we encourage a VCUG in boys and a CystoUS in girls affected by C-RE, for the high risk of associated VUR Tc diethylenetriamine pentaacetic acid; IVU, intravenous urography; MRU, magnetic resonance urography; nUS, neonatal ultrasonography; pUS, prenatal ultrasonography; UPJ, uretero-pelvic junction; US, ultrasonography; UVJ, uretero-vesical junction; VCUG, voiding cystouretrography; VUR, vesico-ureteral reflux.…”

Section: Discussionmentioning

confidence: 99%

“…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. 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.…”

Section: Introductionmentioning

confidence: 99%

“…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%