NECESSITY OF PROPHYLACTIC DRAINAGE TUBE IN RETROPERITONEAL LAPAROSCOPIC NEPHROURETERECTOMY WITH OPEN DISTAL URETERECTOMY: A MATCHED-PAIR ANALYSIS

Objectives: To assess the necessity of prophylactic drain placement in retroperitoneal laparoscopic nephroureterectomy with open distal ureterectomy for upper tract urothelial cancer.Methods: Between July 2011 and March 2021, 200 patients with localized clinical Tis-T3 upper urinary tract urothelial carcinoma underwent laparoscopic nephroureterectomy with open distal ureterectomy. After removing the specimen, drainage tubes were placed on the renal beds and/or in the retrovesical spaces. Drain tubes were omitted for most patients after 2017. We compared the postoperative outcomes between the patients with drain placement (D+ group) and without drain placement (D- group) using propensity score matching.Results: A total of 164 patients (90 in the D+ group and 74 in the D- group) were enrolled, and matched pairs of 108 patients were analyzed. There was no significant difference in the incidence of complications according to Clavien-Dindo grade in the two groups after the propensity score matching. There was no significant difference in the incidence of postoperative lymphocele (n = 5 vs. 9, p = 0.395) and symptomatic lymphocele (n = 1 vs. 1, p = 1) between the two groups. The length of hospital stay was significantly shorter in the D- group (11 vs. 8 days, p < 0.0001).Conclusions: We found that omitting the drainage tube after laparoscopic radical nephroureterectomy did not increase postoperative complications or lymphocele and shortened the post-hospital stay.