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Successful laparoscopic retroperitoneal tumor resection using mixed reality and guiding marker techniques
Yoichiro Tohi1, Homare Okazoe1, Katsuya Mitamura2
1Department of Urology, Faculty of Medicine Kagawa University Kita-gun Kagawa Japan.
IJU Case Reports
|July 5, 2024
Summary
Mixed reality (MR) surgery with a guiding marker precisely located and resected small retroperitoneal tumors. This innovative approach enhanced surgical accuracy for difficult-to-identify metastatic uterine cancer.
Area of Science:
- Surgical Oncology
- Medical Technology
- Gastrointestinal Surgery
Background:
- Small tumors, particularly retroperitoneal metastasis, pose challenges for accurate visual identification and preoperative localization.
- Advancements in mixed reality (MR) technology offer potential solutions for enhancing surgical precision across various medical disciplines.
Observation:
- A 67-year-old female patient with uterine cancer presented with a 2 cm retroperitoneal metastasis near the right diaphragm.
- Preoperative surgical planning was conducted using the "Holoeyes" MR software on a HoloLens2 head-mounted display.
Findings:
- The surgical team employed ultrasonography-guided placement of a guiding marker for precise tumor localization.
- Mixed reality-assisted navigation facilitated strategic port-site placement, enabling accurate laparoscopic tumor resection.
- The procedure resulted in minimal blood loss and no intraoperative complications.
Implications:
- Mixed reality-assisted surgery, combined with guiding markers, significantly improves the precision of retroperitoneal tumor resection.
- This technology holds promise for improving outcomes in complex oncologic surgeries involving small or difficult-to-locate tumors.
- The integration of MR in surgical workflows can lead to safer and more effective patient treatments.

