Final answer:
Ureteropyeloplasty is a surgical procedure to repair a blockage or narrowing of the ureter. It involves removing the blockage and reconstructing the ureter to restore normal urine flow.
Step-by-step explanation:
Ureteropyeloplasty is a surgical procedure to repair a blockage or narrowing of the ureter. It is performed when a kidney stone or other condition is causing a blockage in the ureter, preventing urine from flowing properly to the bladder. Ureteropyeloplasty involves removing the blockage and reconstructing the ureter to restore normal urine flow.