IS case 550: Anterior urethra valves

Peter Mamalakis, MD

University of Rochester

Imaging Sciences URMC 2010
Publication Date: 2010-09-18


Patient is a 6-year-old male with long history of speech and language delay, and delays in fine motor skills. Patient, per most recent developmental assessment, demonstrated ' history of daytime enuresis. However, he had been dry for a period and began again with wetting at school. His mother notes that this was not occurring at home until winter break. His mother also notes that he has been worked-up previously. A voiding cystourethrogram (VCUG) was requested.


Diffuse, symmetric dilatation of the urethra to the level of the fossa navicularis.


Anterior urethra valves


Anterior urethral valves (AUVs) are rare congenital abnormalities causing mild to severe obstruction in children and possibly associated with a proximal diverticulum. Anterior urethral valves are located along the anterior urethra: 40% at the bulbar urethra, 30% at the penoscrotal junction, and 30% in the pendulous urethra. Anterior urethral valves are diagnosed by VCUG which demonstrates a dilated urethra proximal to the valve and narrowing distally.


  1. Berrocal T, López-Pereira P, Arjonilla A, Gutiérrez J. Anomalies of the distal ureter, bladder, and urethra in children: embryologic, radiologic, and pathologic features. Radiographics. 2002 Sep-Oct;22(5):1139-64. PMID: 12235344

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