Related Experiment Video
Updated: Jul 11, 2026

Point-of-Care Kidney and Genitourinary Ultrasound in Adults: Image Acquisition
Published on: June 21, 2024
Dextranomer/hyaluronic acid copolymer (Deflux) implants mimicking distal ureteral calculi on CT
Caleb P Nelson1, Jeanne S Chow
1Department of Urology, Children's Hospital Boston, Boston, MA, USA.
Abstract:
Periureteral or subtrigonal injection of dextranomer/hyaluronic acid (Dx/HA) copolymer (Deflux, Q-Med, Uppsala, Sweden) is an increasingly common endoscopic treatment for vesicoureteral reflux. We report a confusing radiographic finding of bilateral calcified Dx/HA injections initially thought to represent bilateral distal ureteral stones in a boy who presented with intermittent periumbilical pain. Urologists, radiologists, and emergency room physicians should be aware of the potential for calcification of ureteral implants of Dx/HA, and of the potentially confusing radiographic images that may result.
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