Laparoscopic transmesenteric pyeloplasty and isthmusectomy for adult horseshoe kidney with recurrent symptomatic hydronephrosis

Introduction There is no consensus for the horseshoe kidneys with recurrent symptomatic hydronephrosis, so we presented our initial experience with a laparoscopic transmesenteric approach. Case presentation Five patients with symptomatic ureteropelvic junction obstruction were identified by computed tomography urography. The laparoscopic transmesenteric approach was performed in such a way that the mesentery of the small intestine was incised along with the blood vessels longitudinally, and the isthmus was isolated to avoid injury to the mesenteric blood supply; then we cut the isthmus using an endostapler. The ureteropelvic junction obstruction was removed via the Anderson‐Hynes technique. The operation time was 135–204 min, and the estimated blood loss was 50–120 mL. Patients had a 5.7‐day stay postoperatively, there were no other injuries or complications, and ultrasound scans or computed tomography urography showed good postoperative effects. Conclusion Laparoscopic transmesenteric surgery is a feasible and safe procedure for selected cases with horseshoe kidney with recurrent symptomatic hydronephrosis.