Single-system ureteroceles in infants and children

Imaging features

J. Michael Zerin, Douglas R. Baker, Anthony J. Casale

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Purpose. The purpose of this manuscript is to describe the clinical and imaging findings in children who have single-system ureteroceles. Materials and methods. We reviewed the urology records and imaging studies in 32 consecutive infants and children who were diagnosed in our department with single-system ureteroceles. Results. There were 35 ureteroceles in the 32 patients - 29 were unilateral (14 right-sided, 15 left-sided) and 3 were bilateral. Twenty-five patients were boys (78%) and 7 girls. Mean age at presentation was 0.7 years (0-9.2 years). Prenatally detected hydronephrosis or cystic renal dysplasia was the most common presentation (24 patients). Four presented with urinary infection, 2 with abdominal mass, 1 had myelomeningocele, and 1 had hypospadias. Three patients also had multiple non-urologic, congenital anomalies. Thirty-three ureteroceles were intravesical, and 2 were ectopic to the bladder neck. Twenty-four ureteroceles were associated with ipsilateral hydroureteronephrosis and 10 with ipsilateral multicystic dysplastic kidney. One patient had a normal ipsilateral kidney and a contralateral multicystic dysplastic kidney. The ureterocele was identified on at least one imaging study in each patient. Sixteen ureteroceles (47%) everted at VCUG, mimicking paraureteral diverticula. Other variations included ureterocele prolapse and inadvertent ureterocele catheterization (1 each). Conclusions. Single-system ureterocele is an important, although uncommon cause of hydronephrosis and renal dysplasia in infants and children. Single-system ureterocele is distinguished clinically from the more common duplex-system ureterocele by its frequent occurrence in boys and its association with multicystic dysplastic kidney. Because these ureteroceles are frequently small and have a propensity to evert at VCUG, they can be mistaken for paraureteral diverticula.

Original languageEnglish (US)
Pages (from-to)139-146
Number of pages8
JournalPediatric Radiology
Volume30
Issue number3
StatePublished - Mar 2000
Externally publishedYes

Fingerprint

Ureterocele
Multicystic Dysplastic Kidney
Hydronephrosis
Diverticulum
Kidney
Meningomyelocele
Hypospadias
Prolapse
Urology
Catheterization

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Pediatrics, Perinatology, and Child Health
  • Radiological and Ultrasound Technology

Cite this

Single-system ureteroceles in infants and children : Imaging features. / Zerin, J. Michael; Baker, Douglas R.; Casale, Anthony J.

In: Pediatric Radiology, Vol. 30, No. 3, 03.2000, p. 139-146.

Research output: Contribution to journalArticle

Zerin, J. Michael ; Baker, Douglas R. ; Casale, Anthony J. / Single-system ureteroceles in infants and children : Imaging features. In: Pediatric Radiology. 2000 ; Vol. 30, No. 3. pp. 139-146.
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abstract = "Purpose. The purpose of this manuscript is to describe the clinical and imaging findings in children who have single-system ureteroceles. Materials and methods. We reviewed the urology records and imaging studies in 32 consecutive infants and children who were diagnosed in our department with single-system ureteroceles. Results. There were 35 ureteroceles in the 32 patients - 29 were unilateral (14 right-sided, 15 left-sided) and 3 were bilateral. Twenty-five patients were boys (78{\%}) and 7 girls. Mean age at presentation was 0.7 years (0-9.2 years). Prenatally detected hydronephrosis or cystic renal dysplasia was the most common presentation (24 patients). Four presented with urinary infection, 2 with abdominal mass, 1 had myelomeningocele, and 1 had hypospadias. Three patients also had multiple non-urologic, congenital anomalies. Thirty-three ureteroceles were intravesical, and 2 were ectopic to the bladder neck. Twenty-four ureteroceles were associated with ipsilateral hydroureteronephrosis and 10 with ipsilateral multicystic dysplastic kidney. One patient had a normal ipsilateral kidney and a contralateral multicystic dysplastic kidney. The ureterocele was identified on at least one imaging study in each patient. Sixteen ureteroceles (47{\%}) everted at VCUG, mimicking paraureteral diverticula. Other variations included ureterocele prolapse and inadvertent ureterocele catheterization (1 each). Conclusions. Single-system ureterocele is an important, although uncommon cause of hydronephrosis and renal dysplasia in infants and children. Single-system ureterocele is distinguished clinically from the more common duplex-system ureterocele by its frequent occurrence in boys and its association with multicystic dysplastic kidney. Because these ureteroceles are frequently small and have a propensity to evert at VCUG, they can be mistaken for paraureteral diverticula.",
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