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Related Experiment Video

Updated: Apr 19, 2026

Single-port Robotic Transanal Total Mesorectal Excision in a Porcine Model (Sus scrofa domesticus)
04:55

Single-port Robotic Transanal Total Mesorectal Excision in a Porcine Model (Sus scrofa domesticus)

Published on: April 3, 2026

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Study of anorectal function after transanal endoscopic surgery.

L Mora López1, X Serra Aracil1, J Hermoso Bosch1

  • 1Coloproctology Unit, General and Digestive Surgery, Hospital Univeristari Parc Tauli, Sabadell, Barcelona, Spain.

International Journal of Surgery (London, England)
|December 9, 2014
PubMed
Summary

Transanal Endoscopic Microsurgery (TEM) significantly decreased anal pressures but did not lead to clinical incontinence. This study found TEM to be a safe surgical technique for anorectal function.

Keywords:
ContinenceTransanal endoscopic surgery

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Area of Science:

  • Colorectal Surgery
  • Surgical Techniques
  • Anorectal Physiology

Background:

  • Transanal Endoscopic Microsurgery (TEM) is a minimally invasive technique for rectal lesions.
  • Assessing the impact of TEM on anorectal function and continence is crucial for patient outcomes.

Purpose of the Study:

  • To evaluate the effect of TEM on anorectal function using clinical and manometric assessments.
  • To identify patient subgroups at risk for incontinence after TEM.

Main Methods:

  • A prospective study involving 222 patients undergoing TEM.
  • Anal manometry and Wexner incontinence scores were recorded preoperatively and at one and four months post-surgery.

Main Results:

  • Statistically significant decreases in baseline pressure (BP) and voluntary contraction pressure (VCP) were observed post-TEM.
  • No significant differences were found in Wexner incontinence scores between preoperative and postoperative assessments.
  • Multivariate analysis did not identify any predictors of postoperative incontinence.

Conclusions:

  • TEM causes significant, yet temporary, reductions in anal pressures.
  • TEM does not appear to negatively impact clinical continence.
  • The technique is considered safe with no observed predictors of incontinence.