A Pitfall in the Diagnosis of Supernumerary Kidney

Yousef, A. K.; Khadra, A. L. Abu; Dajani, A. M.

doi:10.1111/j.1464-410x.1991.tb15079.x

Cited by 5 publications

(3 citation statements)

References 2 publications

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“…Preoperative diagnosis of supernumerary kidney is difficult [1] [6] despite recentimaging technics including intravenous urography and even CT.…”

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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“…Preoperative diagnosis of supernumerary kidney is difficult [1] [6] despite recentimaging technics including intravenous urography and even CT.…”

Section: Discussionmentioning

confidence: 99%

“…It is a rare anomaly. Its diagnosis is often difficult [1]. Its discovery is most often fortuitous: imaging performed for diagnosing other diseases or during complications.…”

Section: Introductionmentioning

confidence: 99%

A Special Case of Renal Duplication Diagnosed on CT Imaging

Traore¹,

Ossibi²,

Traore³

et al. 2015

OJRad

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“…One notable reason for the increased morbidity appears to arise from misinterpretations in the assessment of diagnostic procedures, in which SKs are not recognized as such. There may be no consequences [25], but this can at worst also lead to unnecessary interventions, such as biopsies [26] or surgery [27], including the risk of further complications [28].…”

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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