Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
A congenital malformation of the male urethra that results from the anterior fusion of the normal plicae collicularis which extend distally from the verumontanum to the posterior urethral wall, forming circumferentially obstructing valves below the verumontanum. This obstruction leads to vesicoureteral reflux which can lead to renal dysplasia. The reflux can also lead to a calyceal leak of urine which can cause a perinephric urinoma or a urinary ascites.
On VCUG see a sharply defined lucent defect in the prostatic urethra lumen distal to the verumontanum causing a fusiform dilation of the posterior urethra. A diminished urinary stream is often seen. The bladder wall is often thickened and trabeculated. Vesicoureteral reflux is present in 35-40% of patients.
US and IVP will show bilateral hydroureteronephrosis.
See References Chapter.
Section Top | Title Page
Follow us on Twitter @pedseducation and @pedsimaging and Facebook @pedsimaging and Instagram @pedsimaging
Please send us comments by filling out our Comment Form.
All contents copyright © 1992-2016 Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D. and the authors. All rights reserved.
"Virtual Pediatric Hospital", the Virtual Pediatric Hospital logo, and "A digital library of pediatric information" are all Trademarks of Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D.
Virtual Pediatric Hospital is funded in whole by Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D. Advertising is not accepted.
Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.
The information contained in Virtual Pediatric Hospital is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.