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Related Experiment Video

Updated: Mar 9, 2026

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Transanal Endoscopic Microsurgery for Early Rectal Cancer: A Single-Center Experience.

Conor H O'Neill1, Joseph Platz, Jesse S Moore

  • 11 Department of Surgery, University of Vermont, Burlington, Vermont 2 Department of Biostatistics, University of Vermont, Burlington, Vermont.

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|January 7, 2017
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Summary
This summary is machine-generated.

Transanal endoscopic microsurgery (TEM) offers effective treatment for early rectal cancer, achieving high survival rates and sphincter preservation. This minimally invasive approach provides oncologic outcomes comparable to traditional surgery in selected patients.

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Area of Science:

  • Colorectal Surgery
  • Minimally Invasive Surgery
  • Oncology

Background:

  • Debate exists regarding the optimal surgical approach for rectal cancer.
  • Transanal endoscopic microsurgery (TEM) is a minimally invasive technique for rectal lesions.
  • Understanding TEM's efficacy in early rectal cancer is crucial for treatment selection.

Purpose of the Study:

  • To evaluate the single-center experience with TEM for early-stage rectal cancer.
  • To assess the oncologic outcomes, complications, and recurrence rates following TEM.
  • To determine the feasibility of sphincter preservation with TEM in distal rectal cancers.

Main Methods:

  • Retrospective review of medical charts for patients undergoing TEM.
  • Inclusion criteria: early-stage rectal cancer (T1-T2, N0, M0).
  • Data collected: lesion characteristics, operative details, complications, recurrence, and survival.

Main Results:

  • 92 patients analyzed with a median follow-up of 4.6 years.
  • High rates of negative margins (98.9%) and short hospital stay (95.4% discharged in 1 day).
  • Low 3-year local recurrence (2.4%) and overall recurrence (6.7%) rates; 3-year disease-specific survival of 98.6%.
  • Sphincter preservation achieved in 89.2% of patients with very low rectal tumors.

Conclusions:

  • TEM provides oncologic outcomes comparable to radical resection for selected early rectal cancer patients.
  • The procedure demonstrates a high rate of sphincter preservation, even for distal tumors.
  • Further research is needed, acknowledging the limitations of this single-center retrospective study.