Fig. 2. Algorithm of treatment for failed endoscopic treatment (ET) Fig. 2. Algorithm of treatment for failed endoscopic treatment (ET). A secondary procedure was performed in cases of recurrent febrile urinary tract infection or newly developed renal scarring or a decrease in renal function after ET failure. When a newly developed renal scar or decreased renal function was observed, we performed ureteral reimplantation rather than secondary ET. Korean J Urol. 2015 May;56(5):398-404. http://dx.doi.org/10.4111/kju.2015.56.5.398