Alright, as a quick recap, vesicoureteral reflux is a condition where pressure in the urinary outflow tract increases and urine gets pushed back up into the ureters or kidneys.

得！快速复习一下：膀胱输尿管反流是指一种由尿路压力增高导致尿液在压力作用下逆流至输尿管或肾的疾病。