Comparison of proximal and distal laparoscopic ureteroureterostomy for complete duplex kidneys in children

Author:

Zhu Xiao-Jiang,Huang Li-QuORCID,Liu Saisai,Dong Jun,Zhu Hao-Bo,Chen Chen-Jun,Wang Li-Xia,Guo Yun-Fei,Deng Yong-Ji,Lu Ru-Gang

Abstract

Abstract Objective To compare efficacy of proximal and distal laparoscopic ureteroureterostomy (UU) for complete duplex kidneys in children. Methods Patients who underwent laparoscopic UU for complete duplex kidneys between December 2016 and July 2022 were reviewed retrospectively. 71 patients who had normal lower pole moiety without vesicoureteral reflux (VUR) were recruited. All of them underwent ultrasound, voiding cystourethrography (VCUG), renal scintigraphy, and magnetic resonance urography preoperatively. Proximal laparoscopic UU was performed in 35 patients and distal laparoscopic UU in 36 patients. Double J stents were placed in normal lower pole moieties. Clinical data, including general information, diagnosis, surgical management, imaging characteristics, clinical symptoms and postoperative complications (classified according to the modified Clavien–Dindo classification), and length of stay were recorded. Measurement date comparisons between groups were performed by t test, counting date were analyzed by chi-square test. Results The study consisted of 71 patients (56 females and 15 males) with complete duplex kidneys (41 in left kidney and 30 in right kidney). The patients’ mean age was 34 m (range 3–161 m) and follow-up ranged from 25 to 81 m. No significant difference was found in age and follow-up time between the two groups. Laparoscopic UU was performed in all patients successfully. The operation time of the two groups was 108.42 ± 26.95 min for distal UU vs 121.46 ± 35.15 min for proximal UU(p = 0.14). No significant difference in postoperative complications was seen between the two groups (22.2% vs 31.4%, p = 0.345). However, in terms of the grading of postoperative complications, the proximal UU group had a higher grade (3 of them had a grade of IV) and more serious complications. Conclusions There was no significant difference in the overall incidence of complications between distal and proximal UU. Compared with proximal laparoscopic UU, distal laparoscopic UU is easier to perform with less injury to the peripheral tissues. Postoperative complications of proximal UU are more serious and more difficult to manage. We recommend complete duplex kidney ureteral reconstruction with distal UU.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Jiangsu Province

Publisher

Springer Science and Business Media LLC

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