Two Supernumerary Kidneys with Ureteral Atresia

Pintér, A; Schäfer, József; Varró, J

doi:10.1016/s0022-5347(17)53636-8

Cited by 10 publications

(5 citation statements)

References 1 publication

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“…When two kidneys are detected on the same side in the presence of a contralateral kidney, the caudally located and/or the relatively smaller renal unit is generally regarded as being supernumerary. 10 In most cases of SNK reported so far, there is a smaller third accessory kidney commonly on the left side and caudal to the parenchyma of the native kidney. The maximum number of SNKs reported in the literature is four.…”

Section: Discussionmentioning

confidence: 97%

“…When SNK is located caudally, a bifid ureter is seen often and the common site of fusion is usually near the bladder. [4][5][6][7][8][9][10][11][12][13][14][15][16][17] The Weigert-Meyer rule may be followed in SNKs with ectopically located ureteric orifices during entry into the bladder but rare reports of opening near the vagina, cervix, prostatic urethra and vulva also exist. 18 The embryological development of SNK has been debated in the literature.…”

Section: Discussionmentioning

confidence: 99%

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Bilaterally Fused Supernumerary Kidneys: A Very Rare Case Report and Review of Literature

Tefera

Gebreselassie

Issack

et al. 2022

IMCRJ

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Supernumerary kidney is a rare anomaly of number where commonly a third extra kidney exists with its own collecting system, blood supply, and encapsulated parenchyma. However, an extremely rare and unique diagnosis of bilateral supernumerary kidneys is also reported in few instances where two extra kidneys exist on each side of the body. Parenchymal fusion and the presence of good excretory function make the supernumerary kidneys even rarer as many of the reported cases are rudimentary organs. We present a 35-year-old man with a sudden onset of agonizing right flank pain and tenderness. Radiologic assessment with computed tomography showed bilaterally fussed and malrotated supernumerary kidneys with an obstructive stone and good contrast uptake. The patient has four fully functional kidneys (two on each side) with their own arterial supply, venous drainage, collecting system and incompletely duplicated ureters bilaterally. An open pyelolithotomy is performed to relieve pain and hydronephrosis. The patient's symptoms improved after surgery and during subsequent follow-up.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Bilaterally Fused Supernumerary Kidneys: A Very Rare Case Report and Review of Literature

Tefera

Gebreselassie

Issack

et al. 2022

IMCRJ

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“…A sprout divides into two and every division permeates separately a metanephric mass, which improves into unrelated simple kidneys in supernumerary kidneys with bifid ureters (6, 10). The supernumerary kidney disagrees from the duplex kidney and megapolycalycosis in that its own divided parenchyma crowns each pelvicaliceal system (4). In most of the patients with supernumerary kidneys, the pathologies of upper urinary tract have been reported.…”

Section: Discussionmentioning

confidence: 99%

“…So, we could not demonstrate bifid ureters. Pinter et al described supernumerary kidneys with ureteral atresia (4). We could not signify ureteral atresia.…”

Section: Discussionmentioning

confidence: 99%

Bilateral Supernumerary Kidney: a Very Rare Presentation

et al. 2014

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To our knowledge, bilateral supernumerary kidney is a very rare renal abnormality and there are five cases presented in the literature. It is difficult to diagnose supernumerary kidney and clinicians have not detected most cases preoperatively. Laboratory and imaging studies were acquired and carefully examined. The normal laboratory tests were found. Emergency ultrasonography was performed and they revealed no signs of parenchymal abnormality in both kidneys. Serial imaging study including enhanced computed tomography (CT) was performed. An imaging study identified bilateral supernumerary kidney with expanded collecting systems. On each side, significant rotation anomaly was found. In addition, there were two different renal arteries originating from the aorta. This report presents radiological determinations of supernumerary kidney bilaterally in a young man. We think that CT commonly appears to be enough for the diagnosis of supernumerary kidneys.

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“…Supernumerary kidneys (SKs) are usually one [1], rarely two [2–5] additional kidneys, distinguished from the significantly more common duplex kidneys by the fact that they are not fused with the other kidney and have their own capsule and blood supply [1]. Most SKs are smaller than normal kidneys [6], but they can also be larger [1, 6, 7].…”

Section: Introductionmentioning

confidence: 99%

Supernumerary kidneys: a clinical and radiological analysis of nine cases

et al. 2019

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Background A supernumerary kidney (SK) is an additional kidney with its own capsule and blood supply that is not fused with the ipsilateral kidney (IK). Because individual case reports indicate a high morbidity rate, the aim of this retrospective study was a detailed analysis of this rare anatomical variant. Methods Our systematic imaging-based search for SKs, conducted in the period from 2000 and to 2017, yielded 9 cases in total (5 men, 4 women; mean age: 51.8 ± 22.8 years). Results The SKs were observed on the right in six and on the left side in three cases. In six subjects (66%) they were located caudal and in three cases (33%) cranial to the ipsilateral kidney. Calculi were found in three (33%) of the renal collecting systems. Five (56%) of the SKs had hydronephrosis grade IV and one SK had recurrent pyelonephritis (11%). Two of the ureters opened into the ipsilateral seminal vesicle (22%). Two (22%) SKs were functional but atrophic. Clinically relevant findings were made in 33% of the IKs: atrophy (n = 2), calculi (n = 1), and reflux with recurrent pyelonephritis (n = 1); another 33% had anatomical anomalies without functional impairment. The correct diagnosis of a SK is possible using CT imaging in all subjects. The prevalence of SK based on CT imaging can be estimated to be 1:26750. Conclusions CT is the method of choice for visualizing SKs. The correct diagnosis is crucial in preventing dispensable surgical procedures and for providing optimal patient treatment and outcome.

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Two Supernumerary Kidneys with Ureteral Atresia

Cited by 10 publications

References 1 publication

Bilaterally Fused Supernumerary Kidneys: A Very Rare Case Report and Review of Literature

Bilaterally Fused Supernumerary Kidneys: A Very Rare Case Report and Review of Literature

Bilateral Supernumerary Kidney: a Very Rare Presentation

Supernumerary kidneys: a clinical and radiological analysis of nine cases

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