Cureus published a case report on November 7, 2026, describing a patient with a complete duplex collecting system who had a lower-pole ureterocele together with an obstruction at the upper-pole ureteropelvic junction. The report, titled "Lower-Pole Ureterocele With Upper-Pole Ureteropelvic Junction Obstruction in a Complete Duplex Collecting System," documents the unusual pairing of two distinct urinary tract problems in the same kidney.
A duplex collecting system is a congenital arrangement in which a kidney drains through two separate collecting pathways rather than one. In this case, according to Cureus, the lower pole carried a ureterocele — a balloon-like swelling at the end of the ureter — while the upper pole was affected by obstruction where the ureter meets the kidney.
The report's value lies in the combination itself. Each of these findings is recognized on its own, but their appearance together in one duplex system makes the case notable for clinicians who assess and manage urinary tract anomalies. The headline and summary released by Cureus do not include patient details, imaging findings, treatment or outcome, so those specifics remain available only in the full text.
Readers who want the clinical particulars — presentation, diagnostic workup, surgical approach and follow-up — should consult the complete case report on Cureus.