Ultrasonic Diagnosis of Obstructed Renal Duplication and Ureterocele

Morgan, C.; Grossman, Herman; Trought, W S; Oddson, T A

doi:10.1097/00007611-198008000-00018

Cited by 11 publications

(4 citation statements)

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“…However, false positive results can still occur. False positives may represent either other congenital abnormalities or entirely normal kidneys [ 16 , 17 ]. There is evidence that MRI is superior to ultrasonography for the diagnosis of duplex kidneys in children [ 18 ].…”

Section: Discussionmentioning

confidence: 99%

Subdiaphragmatic Renal Ectopia: Case Report and Review of the Literature

Zolotas

Krishnan

2016

Case Reports in Nephrology

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Background. We report the case of a male infant whose right kidney migrated to an ectopic position after birth. The migration of a kidney in postnatal life without any symptoms has not been reported in literature so far. Case Presentation. In a series of antenatal and the first postnatal ultrasound scans, the right kidney was normally located within the right renal fossa. During the first 3 months of life, the kidney migrated to a subdiaphragmatic position. This was confirmed on MRI scan. The infant was asymptomatic with normal renal function and blood pressure. Conclusion. Postnatal migration of a kidney has been described in cases of diaphragmatic hernia or nephroptosis. In this report, we describe a case of kidney migration where there were no underlying anatomical defects to provide an explanation for the kidney migration. This is the first report in literature of a case of postnatal migration of a kidney.

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Section: Discussionmentioning

confidence: 99%

Subdiaphragmatic Renal Ectopia: Case Report and Review of the Literature

Zolotas

Krishnan

2016

Case Reports in Nephrology

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“…The combination of US and CDDS has signifi cantly improved the diagnostic accuracy at all levels of the urinary tract. Besides, the cystic nature of the UC as well as its anatomical topography renders the method ideal for the assessment of this abnormality [9,10] .…”

Section: Discussionmentioning

confidence: 99%

Assessment of Obstruction in Adult Ureterocele by Means of Color Doppler Duplex Sonography

et al. 2005

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Aim: The purpose of this study is to present a method for identifying a ureteral obstruction in unilateral orthotopic ureterocele by means of conventional sonography and color Doppler duplex sonography. We focus on the measurement of the ureterocele dimensions, the degree of dilation it causes to the ipsilateral upper urinary tract, the registration of urine out-flow from the ureteral orifice into the bladder and its spectral analysis. Material and Method: Over 2 years at our institutions, 8 adult patients (7 women, 1 man) were diagnosed as having a single system orthotopic ureterocele. Four of them presented with lumbar pain, dysuria and recurrent urinary tract infections, while the remainder were asymptomatic and diagnosed accidentally. The diagnosis was based on serial sonography of the upper and lower urinary tract confirmed by intravenous pyelography and cystoscopy. We also performed color Doppler duplex sonographic evaluation of the urine jets ejected from both ureteral orifices into the bladder. Using the flow spectral study we analyzed the waveforms and measured their duration and flow rate. The study was completed with a comparative analysis of the data obtained from both ureteral orifices. Results: Cystic dilation of the lower ureteric extremity into the bladder was presented in all cases. Upper urinary tract dilation, of various grades, was present in 4 of 8 patients. Differences in urine jets between those derived from the ureterocele and those from the healthy contralateral ureteral orifice were significant in those patients with dilation of the upper urinary tract. The differences concerned mainly the frequency and symmetry of the jets as well as the pattern, duration and velocity of their waves. The 4 above-mentioned patients, with dilated upper urinary tracts and waveforms differentiated from the contralateral ones, were characterized as obstructive. On the other hand, the remaining 4 patients with subclinical ureterocele showed insignificant differences in urine jets and waveforms, and were found to be non-obstructive. Conclusion: Conventional sonography of the urinary tract in combination with color Doppler duplex sonography of the ureteral jets can be used in an attempt to diagnose and evaluate a unilateral orthotopic (single system) ureterocele and assess the necessity of intervention to identify the obstruction.

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“…The main differential of this entity is Ureterocele [9] , which is congenital dilatation of the distal most part of the ureter. The dilated portion of the ureter may herniate into the bladder secondary to the abnormal structure of vesicoureteric junction (VUJ).…”

Section: Differential Diagnosismentioning

confidence: 99%

Very Rare Case of Distal Ureteric Duplication With a Proximal Blind-Ending Branch Showing Uretero-Ureteric Reflux

Agrawal¹,

Singh²,

Suganita³

et al. 2016

jemds

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We report a very rare case of unusual pelvic pain, i.e. left ureteral duplication with a blind ending distal branch showing ureteroureteral reflux, also called as yo-yo, saddle, or seesaw reflux. Most of the cases of partial duplication of PCS reported till now involves the calyces, pelvis, and proximal ureter, which fuses and urine from one of them gets into other called as yo-yo reflux [1], [2] . In our case, there is no separate PCS or duplication of proximal part, but bifurcation is seen in the distal end. [3] This entity is very difficult to suspect and diagnose clinically. We illustrate the role of Intravenous Urography (IVU) and CT urography in the evaluation of such cases.

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Ultrasonic Diagnosis of Obstructed Renal Duplication and Ureterocele

Cited by 11 publications

References 0 publications

Subdiaphragmatic Renal Ectopia: Case Report and Review of the Literature

Subdiaphragmatic Renal Ectopia: Case Report and Review of the Literature

Assessment of Obstruction in Adult Ureterocele by Means of Color Doppler Duplex Sonography

Very Rare Case of Distal Ureteric Duplication With a Proximal Blind-Ending Branch Showing Uretero-Ureteric Reflux

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