Use of endoscopic tissue morcellator in removing retroperitoneal fat in retroperitoneoscopic radical nephrectomy

Guang Yang,Yong Xu,Genyi Qu,Guangjun Duan,Haibo Nie,Shaw P Wan

doi:10.1186/s12893-020-00740-9

Abstract

BackgroundEvaluate the safety and effectiveness of using an endoscopic tissue morcellator (ETM) to remove the retroperitoneal fat during retroperitoneoscopic radical nephrectomy (RRN).MethodsThe use of ETM in the removal of retroperitoneal fat was retrospectively analyzed in patients who underwent RRN for localized renal cancer in our hospital from January 2010 to January 2018. We accrued the appropriate patients and divided them into two groups. The first group included patients of RRN where ETM was used to remove the retroperitoneal fat, while the second group was comprised of patients of RRN where ETM was not performed, which served as the control group. Each group was further divided into two subgroups, including obese patients (BMI ≥ 28) and patients suffering from high-volume renal cancer (Stage T2a). The differences between the two groups as well as their subgroups were analyzed and statistically compared.ResultsAll 222 nephrectomies were completed under retroperitoneoscopy, ETM was used in 105 of these 222 patients. Among them, 31 cases were of obese patients, and 26 cases were of high-volume renal cancer patients. The other 117 patients had undergone RRN without the use of ETM. Among them, 36 cases were of obese patients, and 28 cases were of high-volume renal cancer patients. The differences in age, BMI, tumor position, and tumor size between the two groups were not statistically significant, P > 0.05. Both the surgical time and the blood loss for the ETM group were significantly lower than the control group, p < 0.05. In the subgroup analysis, the obese patients and patients with high tumor volume also showed a significantly lower surgical time and less blood loss, p < 0.05. The postoperative hospitalization time, the total survival rate, and the disease-free survival rate were not statistically significant, p > 0.05.ConclusionsThe use of ETM in removing the retroperitoneal fat during the RRN can potentially reduce the surgical time and lessen the blood loss. This technique is especially advantageous for obese and large-volume tumor patients.

Highlights

Evaluate the safety and effectiveness of using an endoscopic tissue morcellator (ETM) to remove the retroperitoneal fat during retroperitoneoscopic radical nephrectomy (RRN)
Retroperitoneoscopic radical nephrectomy (RRN) is one of the laparoscopic techniques, and it has the advantage of avoiding the intraperitoneal structures
The first group included patients of RRN where ETM was used to remove the retroperitoneal fat, while the second group was comprised of patients of RRN where ETM was not performed, which served as the control group

Summary

Introduction

Evaluate the safety and effectiveness of using an endoscopic tissue morcellator (ETM) to remove the retroperitoneal fat during retroperitoneoscopic radical nephrectomy (RRN). Malignant renal tumors are generally treated by surgical excision. This can be accomplished by open, laparoscopic, or robotic-assisted radical nephrectomy. Retroperitoneal fat is difficult to remove after it has been stripped. Often, it is left inside the retroperitoneum. In this situation, the fat can obscure the visual field and interfere with the dissection. We aimed to compare the safety and efficacy in removing retroperitoneal fat with and without ETM during RRN surgery

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