[Does diagnostic ureterorenoscopy increase the risk of bladder recurrence after total nephroureterectomy? A review of the literature]. / L'urétérorénoscopie diagnostique augmente-t-elle le risque de récidive vésicale après néphro-urétérectomie totale ? Une revue de la littérature.

ABSTRACT

OBJECTIVE: The objective of our study was to evaluate, in a review of the literature, the impact of diagnostic ureteroscopy before total nephroureterectomy (NUT) on the risk of bladder recurrence. METHODS: We conducted a literature review in the Pubmed database in March 2018. Initial research identified 45 publications. Following full text screening, 9 studies were finally included, with a total of 1041 NUT with URS prior versus 2909 NUT alone. The primary endpoint was bladder recurrence. Secondary objectives were specific survival and overall survival. RESULTS: Bladder recurrence was reported in the 9 studies included. Diagnostic ureteroscopy was significantly associated with an increased risk of post-NUT bladder recurrence (HZ 1.42 [1.29-1.56], P<0.01). The specific survival and overall survival at 5 years, were reported in respectively 4 and 2 studies. There was no impact of the pre-NUT diagnostic URS on the specific survival (HZ 0.75 [0.54-1.03], P=0.08) or post-NUT overall survival (HZ 1.15 [0.68-1.96], P=0.59). CONCLUSION: The URS diagnostic before NUT for TVEUS is associated with a significant increase in the risk of postoperative bladder recurrence.