A case of one‐stage laparoscopic drainage and ureterocystoneostomy for iatrogenic ureteral injury associated with infected urinoma

INTRODUCTION: Iatrogenic ureteral injury is a rare but often encountered complication of abdominal and gynecological surgery. This is a case of iatrogenic ureteral injury with infected urinoma treated with one‐stage laparoscopic drainage and ureterocystoneostomy. CASE PRESENTATION: An 80‐year‐old man with rectal cancer had robot‐assisted low anterior rectum resection and left lateral lymph node dissection after colostomy and preoperative chemoradiotherapy. On the 14th postoperative day, he had a fever, and a noncontrast‐enhanced computed tomography scan revealed a low‐density polycystic area in the left pelvic cavity. Retrograde pyelography revealed contrast medium leaking from the left lower ureter, preventing ureteral stent placement. We identified it as a delayed ureteral injury with infected urinoma and performed laparoscopic one‐stage drainage and ureterocystoneostomy. CONCLUSION: This study reported a case of one‐stage laparoscopic drainage and ureterocystoneostomy for iatrogenic ureteral injury with infected urinoma.