Preoperative risk classification for intravesical recurrence after laparoscopic radical nephroureterectomy for upper tract urothelial carcinoma in a multi-institutional cohort.

We identified risk factors and created a risk classification model for intravesical recurrence of upper urinary tract urothelial carcinoma only after laparoscopic radical nephroureterectomy. Based on this model, an individualized surveillance protocol or adjuvant therapy could be provided.