Primary obstructive megaureter with a giant lower ureteral stone synchronous with ipsilateral staghorn kidney.

Introduction: Primary obstructive megaureter (POM) is uncommon in adults. Urolithiasis formation may uncover the underlying congenital abnormally of these patients.

Presentation Of Case: Herein, we present a 20-year-old man who was admitted with synchronous left renal staghorn and a lower giant ureteral stone. Radiologic evaluations revealed that POM is the underlying cause of the uncommon occurrence of synchronous left reno-ureteral stone formation.

Discussion: Urinary tract stones are not uncommon in the POM. Although synchronous renal-ureteral unit stones are less common but staghorn-ureteral stones complex are very rare. In such conditions full radiologic work-up is recommended. Based on our literature review, this is the first reported case of staghorn-ureteral stones complex in the setting of adult POM.

Conclusion: In every case with dilated ureter concomitant with ureteral stone or renal stone, the POM should be included in the differential diagnosis.