Duplex collecting system

Case contributed by Maulik S Patel
Diagnosis almost certain

Presentation

Right loin to groin pain with dysurea - few days.

Patient Data

Age: 25 years
Gender: Male
ultrasound

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.

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