Transperitoneal versus retroperitoneal approaches of pyeloplasty in management of ureteropelvic junction obstruction: A meta-analysis

Comparative efficacy and safety of different minimal invasive pyeloplasty in treating patients with ureteropelvic junction obstruction: a network meta-analysis

OBJECTIVE

In recent years, the minimally invasive surgical treatment methods of ureteropelvic junctional obstruction (UPJO) have been diverse, but its approach and choice of surgical method are controversial. This network meta-analysis (NMA) aimed to compare the safety and effectiveness of minimally invasive surgeries for UPJO, which included robotic or laparoscopic pyeloplasty, via the retroperitoneal or transperitoneal approach.

METHODS

We searched relevant RCTs in PubMed, Embase, Web of Science, the Cochrane Library, and CNKI. To assess the results of operative time, complications and success rate, pairwise, and NMA were carried out. The models for analyses were performed by Revman 5.3, Addis V1.16.8 and R software.

RESULTS

A total of 6 RCTs were included in this study involving four types of surgeries: transperitoneal laparoscopic pyeloplasty (T-LP), retroperitoneal laparoscopic pyeloplasty (R-LP), robot-assisted transperitoneal pyeloplasty (T-RALP), and robot-assisted retroperitoneal pyeloplasty (R-RALP). This study consisted of 381 patients overall. T-RALP had a quicker operational duration (SMD = 1.67, 95% CI 0.27-3.07, P = 0.02) than T-LP. According to the NMA's consistency model, T-RALP improved the surgical success rate more than T-LP (RR = 6303.19, CI 1.28 to 1.47 × 1011). Ranking probabilities indicated that RALP could be the better option than LP and retroperitoneal approach was comparable to transperitoneal approach. All procedures had high surgical success rates and few complications.

CONCLUSION

Outcomes for four surgical approaches used in the UPJO were comparable, with T-RALP being the most recommended approach. Selection between the transperitoneal and retroperitoneal approaches primarily depended on the surgeon's preference. Higher quality evidence is needed to further enhance the result.

Transabdominal laparoscopy and ureteroscopy one‑stage surgery in the treatment of bilateral ureteropelvic junction obstruction combined with bilateral renal stones: A case report

Ureteropelvic junction obstruction (UPJO) is a common congenital malformation of the urinary system, which is mostly unilateral and frequently combined with hydronephrosis and kidney stones. The incidence of kidney stones is ~20%, which markedly increases the difficulty and risk of surgery. The present report describes a rare case of bilateral UPJO combined with bilateral renal stones. Laparoscopy and ureteroscopy one-stage surgery was performed creatively. CT urography demonstrated that the hydronephrosis was markedly reduced after the surgery, the ureteropelvic junction was patent without stone residue and the surgical outcome was ideal.

Comparative study of different surgical approaches for treatment of UPJ obstruction according to the degree/severity of hydronephrosis factor

OBJECTIVE

To compare the efficacy of two different surgical approaches during and after pyeloplasty according to the degree/severity of hydronephrosis factor.

MATERIALS AND METHODS

Sixty child patients with UPJ obstruction admitted to our hospital from August 2019 to October 2021 were collected. Patients who underwent retroperitoneal laparoscopic pyeloplasty (RPLP) were enrolled into Group A (n = 20), while those who received transperitoneal laparoscopic pyeloplasty (TLP) were selected as Group B (n = 40). Clinical parameters, including gender, age, laterality of UPJ obstruction, degree/severity of hydronephrosis, body weight, operation time, drainage tube indwelling time, complete oral feeding time, and length of hospital stay, were compared between the two groups.

RESULTS

All 60 child patients were operated upon successfully without conversion to open surgery. There were no statistically significant differences in gender, age, laterality of UPJ obstruction, and body weight between the two groups, while the operation time of TLP was shorter than that of RPLP, indicating a statistically significant difference (P < 0.001). The differences in complete oral feeding time, drainage tube indwelling time, and length of hospital stay were statistically significant between the two groups, and RPLP was superior to TLP in terms of postoperative recovery time (P < 0.001). A stratified comparison showed that there were no statistically significant differences in anteroposterior diameter ≤ 20 mm, while there were statistically significant differences in anteroposterior diameter >20 mm. Hydronephrosis is reviewed after 3 months of the operation, degree/severity of hydronephrosis have been reduced.

CONCLUSION

Both RPLP and TLP are safe and feasible in the treatment of UPJ obstruction, and their overall surgical effects are equivalent. For child patients with anteroposterior diameter ≤ 20 mm, RPLP is available, while patients with anteroposterior diameter >20 mm, TLP is recommended.