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Giant ureteral stone associated with partial ureteral duplication
Muzaffer Eroglu1, Ali Unsal, Ersin Cimentepe
1Urology Clinic, SSK Ihtisas Hospital, Ankara, Turkey.
International Urology and Nephrology
|June 17, 2004
Summary
A rare case of a giant 9.6 cm ureteral stone in a patient with partial ureteral duplication is presented. This anatomical anomaly caused a "yo-yo phenomenon," preventing stone passage and leading to the large calculus.
Area of Science:
- Urology
- Nephrology
- Surgical Pathology
Background:
- Recurrent urinary tract infections (UTIs) can be associated with complex urinary tract anomalies.
- Partial ureteral duplication is a rare congenital anomaly that can predispose to urinary stasis and stone formation.
Observation:
- A 36-year-old male presented with right flank pain and a three-year history of recurrent UTIs.
- Radiographic imaging revealed a right partial ureteral duplication with a large 9.6 cm stone within the ureteral limb draining a non-functioning upper pole of the right kidney.
Findings:
- Surgical intervention via open ureterolithotomy and partial nephroureterectomy was performed.
- The partial ureteral duplication was identified as the cause of a "yo-yo phenomenon," impeding stone passage and contributing to the giant ureteral stone formation.
Implications:
- This case highlights the importance of recognizing rare anatomical variations in the management of complex urolithiasis.
- Understanding the pathophysiology of ureteral duplication anomalies is crucial for preventing recurrent UTIs and managing giant ureteral stones.
- Early diagnosis and appropriate surgical management are essential for favorable outcomes in patients with giant ureteral calculi secondary to congenital anomalies.