GOOD NEWS: We have fixed the DICOM uploading problem. New cases should work fine. More info

Duplex collecting system

Case contributed by Maulik S Patel
Diagnosis almost certain


Right loin to groin pain with dysurea - few days.

Patient Data

Age: 25 years
Gender: Male

Right hydronephrosis with two separate pelvicalyceal systems. Two ureters in the upper and mid-third of their course. Two ureters join and form a single lower third ureter with a small calculus at the vesicoureteric junction. Twinkle artifact due to the VUJ calculus.

Normal left kidney, prostate, and urinary bladder.

Case Discussion

The right incomplete duplex collecting system is easily appreciated due to the right VUJ calculus.

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.