[Measures to prevent ureteric injury in rectal cancer surgery].

The majority of ureteric injury is iatrogenic during surgical procedures especially pelvic and retroperitoneal operations. Approximately 10% of ureteric injury is associated with colorectal procedures. The major cause is anatomical anomaly. The types of injuries mainly include contusion, clamp injury, ligation injury, cautery, cut injury and distorted traction to an acute angle. The injuries are mainly located in the lower segment of the ureter. An accurate evaluation of the risk of ureteric injury before rectal cancer operation, a better understanding of anatomy in both normal and abnormal conditions, and ureteral stent placement, are important methods to prevent ureteric injury. Primary repair is the best treatment option.