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Related Concept Videos

Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

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Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
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Related Experiment Video

Updated: May 5, 2026

Single-port Robotic Transanal Total Mesorectal Excision in a Porcine Model (Sus scrofa domesticus)
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Dynamic article: transanal rectal excision: a pilot study.

Albert M Wolthuis1, Anthony de Buck van Overstraeten, André D'Hoore

  • 1Department of Abdominal Surgery, University Hospital Leuven, Leuven, Belgium.

Diseases of the Colon and Rectum
|December 10, 2013
PubMed
Summary

Transanal rectal excision is a safe and feasible technique for distal rectal mobilization, especially in narrow pelvis cases. This minimally invasive approach shows promise for improving surgical outcomes in rectal cancer and benign diseases.

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Area of Science:

  • Colorectal Surgery
  • Minimally Invasive Surgery
  • Surgical Oncology

Background:

  • Laparoscopic total mesorectal excision presents challenges in narrow pelvis anatomy.
  • Transanal minimally invasive surgery (TAMIS) offers a solution by enabling distal rectal mobilization via a transanal port.

Purpose of the Study:

  • To evaluate the safety and feasibility of transanal rectal excision (TRE).

Main Methods:

  • A pilot study involving 14 patients (benign and malignant rectal disease) at a Belgian university hospital.
  • TRE was performed using laparoscopic instruments through a single transanal port, with laparoscopically assisted approaches for proctectomy and handsewn coloanal anastomosis for reconstruction.

Main Results:

  • Successful TRE in 14 patients (79% laparoscopically assisted), with a median operating time of 55 minutes.
  • Minimal postoperative morbidity and no readmissions within a median follow-up of 6.3 months.
  • Intraoperative challenges occurred in 5 patients due to exposure, perforation, or radiation fibrosis.

Conclusions:

  • Transanal rectal excision is a safe and feasible surgical option.
  • This technique shows potential for facilitating distal rectal mobilization.
  • Further studies with larger patient cohorts are warranted.