Presentation
Bilateral flank pain. Small left kidney with hydronephrosis on ultrasound.
Patient Data
Age: 55 years
Gender: Male
From the case:
Congenital megaureter with reflux nephropathy
![](https://prod-images-static.radiopaedia.org/images/1821185/b3458ce9a03c45ec46f498a29b83c6_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/1821246/6acaac6578af493bf67ab9cd80fef2c041baeeddfbe3267e0ac6eae4203475b1_thumb.jpeg)
Download
Info
![](https://prod-images-static.radiopaedia.org/images/1821185/b3458ce9a03c45ec46f498a29b83c6_big_gallery.jpg)
Dilation and elongation of both ureters, left >> right. Small left kidney with pyelonephritic scarring and sloughed necrotic papillae. Single pyelonephritic scar on the right.
Case Discussion
Vesicorenal reflux cannot be seen on a CTU, but the appearance of the kidneys is characteristic for chronic recurrent pyelonephritis caused by reflux.