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Related Experiment Videos

Endoscopic full-thickness resection: circumferential cutting method.

Keiichi Ikeda1, C Alexander Mosse, Per-Ola Park

  • 1Department of Surgical Oncology and Technology, St Mary's Hospital, 41 Willow Road, London, UK.

Gastrointestinal Endoscopy
|July 4, 2006
PubMed
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Endoscopic full-thickness resection (EFTR) is a safe and feasible technique for removing gastric wall tumors. This novel method allows for complete tissue resection and defect closure, potentially enabling larger tumor removals.

Area of Science:

  • Gastroenterology
  • Surgical Innovation
  • Endoscopic Procedures

Background:

  • Endoscopic full-thickness resection (EFTR) offers a less invasive approach for removing deeply penetrating gastrointestinal cancers.
  • Histologic examination of excised tissue is crucial for accurate cancer staging and treatment planning.

Purpose of the Study:

  • To develop and evaluate a novel method for endoscopic full-thickness resection (EFTR) of gastric wall defects.
  • To assess the safety and feasibility of a new technique for closing full-thickness defects during endoscopic procedures.

Main Methods:

  • EFTR was performed using a sphincterotome and snare, with a prototype bidirectional cutter tested for enhanced resection.
  • Defect closure was achieved using a sheathed needle, metal tag, thread, and knot-tying devices passed through a 2.8-mm accessory channel.

Related Experiment Videos

  • The technique was evaluated in both non-survival (n=4) and survival (n=8) experiments in pigs.

    • Main Results:

    • Complete full-thickness resection of gastric wall specimens was achieved in all pigs (100%, 12/12).
    • All resected defects were successfully closed using the novel suturing and knot-tying devices (100%, 12/12).
    • No major complications were observed in the survival experiments, with all pigs surviving (100%, 8/8).

    Conclusions:

    • Circumferential EFTR is a feasible and safe endoscopic technique demonstrated in survival experiments.
    • The developed method shows potential for enabling larger and deeper tumor resections within the gastric wall.
    • A healing ulcer at the suturing site was observed, indicating successful tissue repair post-procedure.