Ultrasonography‑assisted flexible ureteroscope for the treatment of parapelvic renal cysts: A comparison between the 1470‑nm diode laser and the holmium laser

Chen,Yu; Wang,Rongjiang; Shen,Xufeng; Tang,Jianer; Shen,Junwen; Fang,Zhihai; Shi,Zhanqin; Jin,Xiaodong

doi:10.3892/etm.2020.9603

Ultrasonography‑assisted flexible ureteroscope for the treatment of parapelvic renal cysts: A comparison between the 1470‑nm diode laser and the holmium laser

Authors:
- Yu Chen
- Rongjiang Wang
- Xufeng Shen
- Jianer Tang
- Junwen Shen
- Zhihai Fang
- Zhanqin Shi
- Xiaodong Jin
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Affiliations: Department of Urology, The First Affiliated Hospital of Zhejiang University School of Medicine, Huzhou, Zhejiang 313100, P.R. China, Department of Urology, The First Affiliated Hospital of Huzhou Teacher's University, Τhe First People's Hospital of Huzhou City, Huzhou, Zhejiang 313100, P.R. China, Department of Urology, The First Affiliated Hospital of Huzhou Teacher's University, The First People's Hospital of Huzhou City, Huzhou, Zhejiang 313100, P.R. China
Published online on: December 27, 2020 https://doi.org/10.3892/etm.2020.9603
Article Number: 172
Copyright: © Chen et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The present study aimed to compare the efficacy and safety of a flexible ureteroscopic holmium laser incision with flexible ureteroscopic 1470‑nm diode laser incision for the treatment of parapelvic renal cysts. The current study collected and analysing the clinical data of 90 independent renal cysts cases retrospectively, including 43 renal cysts cases that received holmium laser surgery (holmium laser group) and 47 renal cysts cases that received 1470‑nm diode laser surgery (1470‑nm diode laser group). Each group was divided into a thin‑walled cyst subgroup and thick‑walled cyst subgroup according to cyst wall thickness. Intracapsular hematoma was significantly lower in the 1470‑nm diode laser group compared with the holmium laser group (0/47 vs. 4/43; P=0.048). The incision diameter in the 1470‑nm diode laser group was significantly larger than the holmium laser group in the thick‑walled parapelvic renal cysts subgroup [1.70(1.50,1.90) vs. 1.30(1.25,1.70) cm; P=0.007]. The renal cystic diameter of the two groups was markedly reduced one and six months after surgery. The difference was non‑significant in the diameter of the renal cyst in the thin‑walled cysts subgroups between the two laser groups 6 months after surgery (1.01±0.38 vs. 1.03±0.53 cm; P=0.454). However, the diameter of the renal cyst in the thick‑walled cysts subgroup treated with the 1470‑nm diode laser was significantly lower compared with the thick‑walled cysts subgroup treated with the holmium laser 6 months after surgery (1.21±0.57 vs. 1.88±0.94 cm; P=0.002). The results demonstrated that the use of a 1470‑nm diode laser or holmium laser surgery under a flexible ureteroscope is a safe and effective treatment for parapelvic renal cysts. For thick‑walled parapelvic renal cysts, the 1470‑nm diode laser appears to exhibit a lower postoperative recurrence rate and better long‑term postoperative effects due to its improved haemostatic effect and larger intraoperative incision diameter.

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