Journal of Ultrasound in Medicine, Vol 11, Issue 2 87-91, Copyright © 1992 by American Institute of Ultrasound in Medicine
Sonography of the bladder after ureteral reimplantation
J. M. Zerin, J. D. Smith, J. K. Sanvordenker and D. A. Bloom
Section of Pediatric Radiology, University of Michigan Hospitals, Ann Arbor 48109-0252.
Pre- and postoperative sonograms were reviewed in 59 children who underwent
ureteral reimplantation to assess the frequency, location, extent, and
evolution over time of focal thickening of the posterior bladder wall and
bladder base after reimplantation. The interval between reimplantation and
follow-up sonography ranged from 2 weeks to 12.36 years (mean, 1.29 years).
Thirty-two patients (54.2%) had focal thickening of the posterior bladder
wall and trigone after reimplantation. The earlier after reimplantation the
children were first evaluated with sonography, the much more frequently was
thickening observed. Thirteen had fusiform thickening along the submucosal
tunnel and twenty-four had a hyperechoic nodule at the trigone. The
thickening resolved in one third of the children and is presumed to have
represented postoperative edema in these cases. However, on the sonographic
appearance alone it was not possible to differentiate transient changes
resulting from postoperative edema from those representing developing
fibrosis or granuloma formation.
