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Related Experiment Video

Updated: Jul 4, 2026

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Radiation-free luminal stenting using peroral cholangioscope.

Lin Liu1, Hongguang Wang1, Liying Tao1

  • 1Gastroenterology Department, Jilin People's Hospital, Changchun, Jilin, China.

Igie : Innovation, Investigation and Insights
|July 3, 2026
PubMed
Summary

Radiation-free peroral cholangioscopy successfully guided self-expandable metal stent (SEMS) placement for gastrointestinal obstruction in two patients. This novel approach safely relieved symptoms without adverse events, offering a promising alternative to traditional methods.

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Area of Science:

  • Gastroenterology
  • Interventional Endoscopy
  • Oncology

Background:

  • Traditional endoscopic self-expandable metal stent (SEMS) placement for gastrointestinal obstruction relies on fluoroscopy.
  • Fluoroscopy involves radiation exposure, posing potential risks to patients and staff.

Purpose of the Study:

  • To evaluate the safety and efficacy of a radiation-free technique for SEMS placement.
  • To assess the utility of peroral cholangioscopy-guided SEMS placement in managing gastrointestinal obstruction.

Main Methods:

  • Two patients with gastrointestinal obstruction underwent SEMS placement.
  • Peroral cholangioscopy was utilized for radiation-free guidewire insertion and stent deployment.

Main Results:

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  • Successful guidewire insertion and SEMS placement were achieved in both cases using peroral cholangioscopy.
  • Significant relief of gastrointestinal obstruction symptoms was observed post-procedure.
  • No intraoperative or postoperative adverse events, such as bleeding or perforation, were reported.

Conclusions:

  • Radiation-free peroral cholangioscopy is a safe and effective method for SEMS placement.
  • This technique can successfully relieve obstruction symptoms caused by gastrointestinal tumors.
  • It presents a viable alternative to fluoroscopy-guided procedures.