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Related Concept Videos

Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

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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Inflammatory Bowel Disease V: Surgical Management

Surgical interventions for inflammatory bowel disease (IBD), which includes ulcerative colitis and Crohn's disease, are essential in managing symptoms and addressing complications. The selection of surgical procedures is contingent upon the specific conditions and complications that stem from these illnesses.
Here are some common surgical interventions for IBD:

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Related Experiment Video

Updated: Jul 3, 2026

Intraoperative Assessment of Resection Margins in Oral Cavity Cancer: This is the Way
04:45

Intraoperative Assessment of Resection Margins in Oral Cavity Cancer: This is the Way

Published on: May 10, 2021

Rectal cancer: involved circumferential resection margin - a root cause analysis.

H Youssef1, E C Collantes, S H Rashid

  • 1University Hospital Birmingham, Queen Elizabeth Medical Centre, Birmingham, UK. haney@doctors.org.uk

Colorectal Disease : the Official Journal of the Association of Coloproctology of Great Britain and Ireland
|July 22, 2008
PubMed
Summary

Positive circumferential resection margins (CRM) in rectal cancer surgery are linked to recurrence. Analysis revealed no single cause, suggesting current multidisciplinary team (MDT) processes and surgical techniques may be insufficient for low rectal tumors.

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Area of Science:

  • Colorectal surgery
  • Surgical oncology
  • Oncology

Background:

  • Positive circumferential resection margin (CRM) after rectal cancer surgery is a key predictor of local recurrence.
  • This outcome may indicate deficiencies in the multidisciplinary team (MDT) decision-making process.

Purpose of the Study:

  • To investigate the causes of positive CRM in patients undergoing elective rectal cancer surgery.
  • To evaluate the roles of MDT decision-making, preoperative staging, and surgical technique in positive CRM outcomes.

Main Methods:

  • Prospective data collection from March 2002 to September 2005 for patients undergoing potentially curative rectal cancer surgery.
  • Analysis of CRM status in postoperative histology for all eligible patients.

Main Results:

  • 10% (16 of 158) of patients had a positive CRM.
  • Causes included imaging staging failures (n=4), lack of preoperative radiotherapy for equivocal MRI findings (n=2), inaccurate tumor site assessment (n=1), and intraoperative difficulties (n=1).
  • Abdominoperineal resection (APR) had a higher positive CRM rate (26%) compared to anterior resection (5%).

Conclusions:

  • No single definitive cause for positive CRM was identified.
  • Current MDT processes and surgical techniques may be inadequate for managing low rectal tumors, particularly those requiring APR.