Laparoscopic redo pyeloplasty with a buccal mucosal graft

INTRODUCTION: Redo pyeloplasty can be difficult due to scar tissue or fibrosis. Ureteral reconstruction with a buccal mucosal graft is performed safely and successfully, but most reports of ureteral reconstruction using a buccal mucosal graft are of robot‐assisted surgery, with few reports of laparoscopic‐assisted surgery. A case of laparoscopic‐assisted redo pyeloplasty using a buccal mucosal graft is presented. CASE PRESENTATION: A 53‐year‐old woman was diagnosed with ureteropelvic junction obstruction, and a double‐J stent was placed to relieve backache. She visited our hospital 6 months after double‐J stent placement. Three months later, laparoscopic pyeloplasty was performed. At 2 months postoperatively, anatomic stenosis occurred. Holmium laser endoureterotomy and balloon dilation were performed; however, the anatomic stenosis recurred, and laparoscopic redo pyeloplasty with a buccal mucosal graft was performed. After redo pyeloplasty, obstruction was improved, and her symptoms disappeared. CONCLUSION: This is the first case of using a buccal mucosal graft for laparoscopic pyeloplasty in Japan.