Article Sidebar

pdf
Date Published: 12/12/2025
Abstract Views: 0
Views pdf: 0
DOI: https://doi.org/10.51298/vmj.v556i2.16416
Issue
Vol. 556 No. 2 (2025)
Section
Các bài báo
How to Cite
Lê, Đình N., Ngô, H. H., Phạm, T. A., Nguyễn, T. D., & Dương, M. H. (2025). GUY’S STONES SCORE AND OUTCOMES OF MINI PERCUTANEOUS NEPHROLITHOTOMY: A 289-PATIENTS RETROSPECTIVE STUDY. Vietnam Medical Journal, 556(2). https://doi.org/10.51298/vmj.v556i2.16416

GUY’S STONES SCORE AND OUTCOMES OF MINI PERCUTANEOUS NEPHROLITHOTOMY: A 289-PATIENTS RETROSPECTIVE STUDY

Đình Nguyên Lê, Huy Hoàng Ngô, Tài An Phạm, Trung Dương Nguyễn, Minh Hiếu Dương

Main Article Content

Abstract

Objectives: To evaluate the classification of renal stones according to Guy’s Stone Score (GSS) and its correlation with the outcomes of mini percutaneous nephrolithotomy (mPCNL). Materials and methods: A retrospective study was conducted on 289 patients who underwent mPCNL between January and July 2025 at 103 Military Hospital. Clinical characteristics, imaging findings, surgical parameters, stone-free rate (SFR), and complications were recorded. Stones were classified by GSS (I–IV). SFR was defined as no residual stone on kidney-ureter-bladder (KUB) X-ray 2–3 days after surgery. Complications were graded using the modified Clavien-Dindo system. Results: The mean age was 55.7 ± 12.0 years; 63% were male. Mean stone size was 22.1 ± 10.2 mm; non-staghorn stones accounted for 88.2%. GSS distribution: I (42.6%), II (44.3%), III (10.7%), IV (2.4%). Mean operative time was 53.8 minutes; 97.9% of cases required a single tract, mainly through the lower calyx. The overall SFR was 73.4%, decreasing from GSS I (84.6%), II (71.1%), III (48.4%) to IV (28.6%) (p<0.001). Complications occurred in 9.3% of patients, mostly minor; sepsis was observed in 0.7%. The complication rate tended to increase with higher GSS but was not statistically significant (p=0.193). Conclusions: mPCNL is a safe and effective treatment for renal stones. GSS is a valuable predictor of stone-free rate.

Article Details

Keywords

renal stone, mini-percutaneous nephrolithotomy, Guy’s Stone Score, stone-free rate, complication

References

1. Hoàng Long, Trần Quốc Hòa và cộng sự. Kết quả tán sỏi qua da qua đường hầm nhỏ tư thế nằm nghiêng dưới hướng dẫn siêu âm. Tạp chí Nghiên cứu Y học. 2020; 134(10): 109-115.
2. Đỗ Trường Thành, Đỗ Ngọc Sơn và cộng sự. Đánh giá hiệu quả phương pháp tán sỏi thận qua da đường hầm nhỏ dưới hướng dẫn siêu âm, tư thế nằm nghiêng. Tạp chí Y học Việt Nam. 2019; 481(Suppl): 300-306.
3. Kiều Đức Vinh, Nguyễn Việt Hải và cộng sự. Đánh giá kết quả lấy sỏi thận qua da đường hầm nhỏ theo thang điểm GUY. Tạp chí Y Dược Lâm sàng 108. 2024; 481(Suppl): 67-74.
4. Khalil M., Sherif H. et al. Utility of the Guy’s stone score in predicting different aspects of percutaneous nephrolithotomy. Afr J Urol. 2018; 24(3): 191-196.
5. Kumar U., Tomar V. et al. STONE score versus Guy’s stone score—prospective comparative evaluation for success rate and complications in percutaneous nephrolithotomy. Urol Ann. 2018; 10(1): 76-81.
6. Mushtaq A., Wani S. et al. Evaluation of the Guy’s, STONE, and S-ReSC scores in predicting the outcomes of mini-percutaneous nephrolithotomy: a prospective study. Cureus. 2025; 17(4): e82723.
7. Singh A.K., Shukla P.K. et al. Using the modified Clavien grading system to classify complications of percutaneous nephrolithotomy. Curr Urol. 2017; 11(2): 79-84.
8. Sinha R.K., Mukherjee S. et al. Evaluation of stone-free rate using Guy’s stone score and assessment of complications using modified Clavien grading system for percutaneous nephrolithotomy. Urolithiasis. 2015; 43(2): 139-145.
9. Thomas K., Smith N.C. et al. The Guy’s stone score-grading the complexity of percutaneous nephrolithotomy procedures. Urology. 2011; 78(2): 277-281.
10. Vicentini F.C., Marchini G.S. et al. Utility of the Guy’s stone score based on computed tomographic scan findings for predicting percutaneous nephrolithotomy outcomes. Urology. 2014; 83(6): 1248-1253.