Weigert-Meyer rule illustration

Case contributed by Dr Matt Skalski
Diagram

The image depicts a duplex collecting system with an obstructed upper pole moiety draining inferior and medially at the bladder with a ureterocele. The lower moiety is inserting at the expected location for the ureter. Often the lower ureter shows reflux, however I did not depict that here. 

Case Discussion

The illustration depicts many of the common features expected with a duplex collecting system, following the Weigert-Meyer rule

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.