Robot-assisted pyeloplasty for ureteropelvic junction obstruction complicating horseshoe kidney

Abstract

Introduction

Horseshoe kidney is characterized by midline fusion of the lower poles of both kidneys. We report a case where robot-assisted pyeloplasty was performed for hydronephrosis complicating horseshoe kidney.

Case presentation

A 31-year-old man repeatedly developed fever since childhood. He visited a local clinic for fever and left back pain, where he was diagnosed and treated for acute pyelonephritis. Abdominal computed tomography led to a diagnosis of horseshoe kidney and associated left ureteropelvic junction obstruction. He was referred to our hospital for pyeloplasty because of persistent left back pain. Robot-assisted left pyeloplasty was performed using the Anderson–Hynes technique with four ports because crossing vessels were discovered intraoperatively. Isthmusectomy was not performed. The postoperative course was favorable. Computed tomography performed approximately 2 years post-surgery showed improvement in hydronephrosis. No left back pain was reported.

Conclusion

Our case experience suggests the utility of robot-assisted pyeloplasty for patients with horseshoe kidney.