Duplication of the Kidney and Ureter: A Statistical Study of 230 New Cases

Nation, Earl F.

doi:10.1016/s0022-5347(17)70379-5

Cited by 125 publications

(26 citation statements)

References 12 publications

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“…Nearly 10% of all human beings are born with a congenital anomaly of the urogenital system (Burkland, 1958) and duplication of the upper urinary tract is one of the commoner anomalies and occurs in about 1 in 160 individuals (Campbell and Harrison, 1970;Nation, 1944). Our finding of a duplex system (excluding a bifid renal pelvis) in 11 of 101 relatives or 32 of 101 relatives (including a bifid renal pelvis) contrasts markedly with the predicted incidence in the population.…”

Section: Discussionmentioning

confidence: 53%

Familial incidence of bifid and double ureters

Atwell¹,

Cook²,

Howell³

et al. 1974

Archives of Disease in Childhood

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Section: Discussionmentioning

confidence: 53%

Familial incidence of bifid and double ureters

Atwell¹,

Cook²,

Howell³

et al. 1974

Archives of Disease in Childhood

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“…Morison (9) and Leiter (6) reported discordant anomalies in homozygotic twins and suggested that the cause of such anomalies might be intrauterinary factors. Nation (10) stated that the ureter bud is surrounded by nefrogenic mesenchyma from the very beginning of its growth. Our finding of immature renal tissue in the termi nal mass, as well as an earlier description of immature, connective tissue sur rounding a blind-ending bifid ureter (15), speaks in favour of the opinion that the nephrogenic mesenchyma existed in these two patients, thus supporting the theory proposed by Nation.…”

Section: Discussionmentioning

confidence: 99%

“…Kidney and ureteral duplications have been described in families where blind-ending ureter was found in other members (14). Nation (10) found ureteral duplication and blind-ending bifid ureter in the same individual. These observations suggest that the genesis of the two conditions may be the same.…”

mentioning

confidence: 99%

Duplication of the Renal Pelvis and Blind-Ending Bifid Ureter in Twins

Bergman¹,

Hansson²,

Nilson³

1977

Urol Int

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Blind-ending bifid ureter in a woman with urinary tract infection and a duplicated renal pelvis in her twin sister are reported. The blind-ending bifid ureter terminated as a fibrous cord with a terminal mass of immature renal tissue. This type of ureter may be a transitional form between histologically blind-ending bifid ureter and duplication of the renal pelvis and/or kidneys. Findings in twins support this opinion.

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“…Duplex collecting systems are the most common anomaly of the urinary system and can be either incomplete or complete [1]. Anomalies like a ureterocele and ectopic ureter mostly affect the upper system, while anomalies like vesicoureteral reflux (VUR) mostly affect the lower system [2, 3].…”

Section: Introductionmentioning

confidence: 99%

Unusual Presentation of Duplex Kidneys: Ureteropelvic Junction Obstruction

Başdaş

Çelebi

Özaydın

et al. 2016

Advances in Urology

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Aim. Ureteropelvic junction obstruction (UPJO) is rarely associated with a duplex collecting system. We review this unusual anomaly in terms of presentation, diagnostic evaluation, and surgical management. Method. We retrospectively reviewed the medical records of patients diagnosed with a duplex system with UPJO. Result. Sixteen patients (6 girls, 10 boys) with 18 moieties were treated surgically and four patients were treated conservatively. The median age at surgery was two years (range, 2 months to 7 years). The lower pole and upper moiety were affected in 12 and two kidneys, respectively, and both were affected in two patients. The anomaly was right-sided in 12 moieties and left-sided in six. The duplication was incomplete in seven patients and complete in nine. The mean renal pelvis diameter at the time of surgery was 25.6 (range 11–48 mm) mm by USG. The mean renal function of the involved moiety was 28.3% before surgery. Management included pyelopyelostomy or ureteropyelostomy in six moieties, dismembered pyeloplasty in eight moieties, heminephrectomy in four cases, and simultaneous upper heminephrectomy and lower pole ureteropyelostomy in one patient. Conclusion. There is no standard approach for these patients and treatment should be individualized according to physical presentation, detailed anatomy, and severity of obstruction.

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Duplication of the Kidney and Ureter: A Statistical Study of 230 New Cases

Cited by 125 publications

References 12 publications

Familial incidence of bifid and double ureters

Familial incidence of bifid and double ureters

Duplication of the Renal Pelvis and Blind-Ending Bifid Ureter in Twins

Unusual Presentation of Duplex Kidneys: Ureteropelvic Junction Obstruction

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