Three-dimensional reconstruction by a computer-assisted surgery system for pediatric hydronephrosis caused by accessory renal artery compression: a single-center retrospective observational comparative case series - Report - MDSpire

Utilization of Computer-Assisted Surgical Systems for 3D Reconstruction in Pediatric Hydronephrosis Due to Accessory Renal Artery Compression: A Retrospective Comparative Analysis from a Single Center

  • By

  • Rongkun Zhu

  • Xiaoxuan Ma

  • Di Wang

  • Qian Dong

  • Jian Guo

  • Xiwei Hao

  • July 21, 2026

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Clinical Report: Utilization of Computer-Assisted Surgical Systems for 3D Reconstruction

Overview

This study evaluates the clinical value of computer-assisted surgery (CAS) 3D reconstruction in pediatric hydronephrosis due to accessory renal artery (ARA) compression.

Background

Ureteropelvic junction obstruction (UPJO) is the leading cause of pediatric hydronephrosis, often complicated by ARA compression. Accurate preoperative evaluation is crucial for effective surgical planning, yet conventional imaging frequently fails to identify ARA compression. This study investigates the potential of CAS 3D reconstruction to enhance surgical outcomes in this context.

Data Highlights

Metric3D Reconstruction Group (n=13)Control Group (n=7)P-value
Operative Time (min)108 (98–128)128 (124–132)0.002
Intraoperative Blood Loss (mL)5 (4–8)8 (5–15)0.007
Length of Hospital Stay (days)9 (7–11)9 (7-12)0.838

Key Findings

  • Conventional imaging failed to detect ARA compression in all patients.
  • CAS 3D reconstruction identified ARA compression in all patients in the 3D group.
  • Operative time was significantly shorter in the 3D reconstruction group compared to the control group.
  • Intraoperative blood loss was significantly lower in the 3D reconstruction group.
  • Length of hospital stay was comparable between both groups.

Clinical Implications

The study presents findings on the use of CAS 3D reconstruction in preoperative planning and its association with operative time and blood loss in pediatric patients with hydronephrosis due to ARA compression.

Conclusion

CAS 3D reconstruction provides anatomical insights for surgical planning in pediatric hydronephrosis cases caused by ARA compression.

Related Resources & Content

  1. Zhu R, Guo J, Zhang Y, et al., SSRN, 2023 -- Application of The Computer-Assisted Surgery System in the Diagnosis And Surgery of Vasomotor Renal Hydronephrosis in Children
  2. Surgical Endoscopy, 2025 -- Real-Time Visualization of 3D Reconstruction Models During Robot-Assisted Partial Nephrectomy
  3. The International Journal of Medical Robotics and Computer Assisted Surgery, 2023 -- Development of an Artificial Intelligence–Driven Three-Dimensional Reconstruction Model of Renal Vasculature for Surgical Planning in Robot-Assisted Partial Nephrectomy
  4. 3D Interactive Virtual Models of Renal Cancer Anatomy Influence Surgical Planning for Partial Nephrectomy and Enhance Surgeon Confidence Compared to Traditional Volume-Rendered Images, 2019
  5. DILATATION OF THE UPPER URINARY TRACT PUJ OBSTRUCTION, 2026 -- European Association of Urology/European Society for Paediatric Urology guidelines
  6. Comparison of Retrograde Intrarenal Surgery (RIRS) and Mini-Percutaneous Nephrolithotomy (Mini-PCNL) for Treating Kidney Stones in Children
  7. DILATATION OF THE UPPER URINARY TRACT PUJ OBSTRUCTION
  8. https://acsearch.acr.org/list/GetAppendix?PanelName=Pediatric&TopicId=254&utm_source=openai
  9. Application of The Computer-Assisted Surgery System in the Diagnosis And Surgery of Vasomotor Renal Hydronephrosis in Children by Rongkun Zhu, Jian Guo, Yanan Zhang, Chunmei Bing, Lin Liu, Cong Shang, Wenli Xiu, Yao Liu, Qian Dong, Xiwei Hao :: SSRN

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