Free Supernumerary Kidney

Sasidharan, K; Babu, Aravind; Rao, Muddanna S.; Bhat, Ramesa Shafi

doi:10.1111/j.1464-410x.1976.tb06660.x

Cited by 12 publications

(5 citation statements)

References 1 publication

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“…As far as embryogenesis is concerned, supernumerary kidney occurs when two ureters, separated partially or completely penetrate a blastema, hence leading to the formation of two kidneys as a result of secondary fragmentation of the metanephros [3]. Supernumerary kidney (SK) can be found on the occasion of back pain, hematuria, urinary incontinence, high blood pressure or trauma [4]- [6]. It may be responsible for pelvic mass or even simulate an adrenal tumor [4] [7].…”

Section: Discussionmentioning

confidence: 99%

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A Special Case of Renal Duplication Diagnosed on CT Imaging

Traore¹,

Ossibi²,

Traore³

et al. 2015

OJRad

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Section: Discussionmentioning

confidence: 99%

“…Supernumerary kidney (SK) can be found on the occasion of back pain, hematuria, urinary incontinence, high blood pressure or trauma [4]- [6]. It may be responsible for pelvic mass or even simulate an adrenal tumor [4] [7]. Its discovery is most often incidental during diagnostic imaging for other diseases or in the event of a complication.…”

Section: Discussionmentioning

confidence: 99%

A Special Case of Renal Duplication Diagnosed on CT Imaging

Traore¹,

Ossibi²,

Traore³

et al. 2015

OJRad

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“…Once two sprouts originate disparately from the Wolffian duct and permeate the similar metanephric mass, two free nephritic collecting structures shape, but the parenchymas abide blended. 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).…”

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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“…The supernumerary kidney is a very rare anomaly of the urinary system; the confirming criteria are a separate collecting system, blood supply and distinct and encapsulated parenchymal mass [1]. Malignancy in a supernumerary kidney is extremely rare.…”

Section: Commentsmentioning

confidence: 99%

Synchronous renal cell carcinoma in supernumerary and ipsilateral kidneys

et al. 2002

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A 52-year-old woman presented with right loin pain and haematuria of 2 months' duration. A clinical examination was unremarkable, but on CT there was an enhancing large heterogeneous mass in the right kidney and another distinct smaller mass of similar CT characteristics inferior to the right kidney ( Fig. 1). The masses did not appear contiguous in any of the CT sections. Exploration disclosed a large tumour in the right kidney and inferiorly a separate smaller reniform mass with tumefaction, with all the features of a supernumerary kidney, e.g. a distinct blood supply and ureter (Fig. 2). Both units were extirpated radically; histologically both had the granular cell variant of RCC (nuclear grade III). CommentsThe supernumerary kidney is a very rare anomaly of the urinary system; the confirming criteria are a separate collecting system, blood supply and distinct and encapsulated parenchymal mass [1]. Malignancy in a supernumerary kidney is extremely rare. Although Wilms' tumour and cystadenocarcinoma have been described in supernumerary kidneys [2,3] to date no case of RCC has been reported. Thus the synchronous occurrence of RCC in supernumerary and ipsilateral kidneys as reported here is of interest because it is extremely rare. References1 Sasidharan K, Babu AS, Rao MM, Bhat HS. Free supernumerary kidney. Br J Urol 1976; 48 : 388 2 Wu JP, Garcia J. Supernumerary kidney with Wilms' tumor.Fig. 1. CT showing RCC in the right kidney and in the ipsilateral supernumerary kidney.Fig. 2. The transected specimens of the tumour-containing right kidney and ipsilateral supernumerary kidney.

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Free Supernumerary Kidney

Cited by 12 publications

References 1 publication

A Special Case of Renal Duplication Diagnosed on CT Imaging

A Special Case of Renal Duplication Diagnosed on CT Imaging

Bilateral Supernumerary Kidney: a Very Rare Presentation

Synchronous renal cell carcinoma in supernumerary and ipsilateral kidneys

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