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Related Concept Videos

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Related Experiment Video

Updated: Apr 21, 2026

Laparoscopy-endoscopy Cooperative Surgery for the Treatment of Gastric Gastrointestinal Stromal Tumors
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Laparoscopic endoscopic cooperative surgery.

Naoki Hiki1, Souya Nunobe, Tatsuo Matsuda

  • 1Department of Gastroenterological Surgery, Gastroenterological Center, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan.

Digestive Endoscopy : Official Journal of the Japan Gastroenterological Endoscopy Society
|November 14, 2014
PubMed
Summary

Laparoscopic and endoscopic cooperative surgery (LECS) offers a safe method for resecting gastric tumors. While classical LECS is effective for submucosal tumors, modified techniques are needed for malignant conditions with mucosal defects.

Keywords:
classical laparoscopic and endoscopic cooperative surgery (LECS)gastric submucosal tumorgastrointestinal stromal tumor (GIST)laparoscopic endoscopic cooperating surgerylaparoscopic surgery

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Area of Science:

  • Gastroenterology
  • Surgical Oncology
  • Minimally Invasive Surgery

Background:

  • Laparoscopic and Endoscopic Cooperative Surgery (LECS) is an evolving technique for gastrointestinal tumor resection.
  • Classical LECS was initially developed for gastric gastrointestinal stromal tumors (GIST).
  • Modified LECS approaches (e.g., inverted LECS, CLEAN-NET, NEWS) aim to prevent tumor cell seeding during malignant tumor dissection.

Purpose of the Study:

  • To review the development and application of classical and modified Laparoscopic and Endoscopic Cooperative Surgery (LECS) techniques.
  • To assess the current safety and utility of classical LECS for gastric submucosal tumors.
  • To identify limitations and areas for improvement in LECS for malignant gastrointestinal diseases.

Main Methods:

  • Review of existing literature on Laparoscopic and Endoscopic Cooperative Surgery (LECS) for gastrointestinal tumors.
  • Comparison of 'classical LECS' with modified techniques like inverted LECS, CLEAN-NET, and NEWS.
  • Analysis of factors influencing the application of LECS, including tumor characteristics and technical challenges.

Main Results:

  • Classical LECS is a safe and effective procedure for gastric submucosal tumors without mucosal defects, regardless of tumor location.
  • Modified LECS procedures are designed to mitigate risks associated with malignant tumors but face limitations in tumor size, location, and technical complexity.
  • Current LECS techniques may not be optimal for malignant diseases with mucosal lesions, such as GIST with mucosal defects or gastric cancer.

Conclusions:

  • Classical LECS is a valuable tool for specific gastric tumors, demonstrating safety and efficacy.
  • Modified LECS techniques show promise for malignant tumors but require further refinement to overcome limitations.
  • Advancements in LECS techniques are necessary for broader application in treating gastrointestinal cancers with mucosal involvement.