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Related Concept Videos

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...
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,...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
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A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:

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Related Experiment Video

Updated: Jul 4, 2026

Murine Ileocolic Bowel Resection with Primary Anastomosis
08:49

Murine Ileocolic Bowel Resection with Primary Anastomosis

Published on: October 29, 2014

Radiological evaluation of colorectal anastomoses.

A Doeksen1, P J Tanis, A F J Wüst

  • 1Department of Surgery, Sint Lucas Andreas Hospital, Jan Tooropstraat 164, 1006 AE, Amsterdam, the Netherlands.

International Journal of Colorectal Disease
|June 19, 2008
PubMed
Summary
This summary is machine-generated.

Postoperative radiological imaging of colorectal anastomoses shows significant interobserver variability and a high false-negative rate. These findings suggest that imaging should be used restrictively and interpreted cautiously to avoid misdiagnosis of anastomotic leakage.

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Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
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The C-seal: A Biofragmentable Drain Protecting the Stapled Colorectal Anastomosis from Leakage
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The C-seal: A Biofragmentable Drain Protecting the Stapled Colorectal Anastomosis from Leakage

Published on: November 4, 2010

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Last Updated: Jul 4, 2026

Murine Ileocolic Bowel Resection with Primary Anastomosis
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Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
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Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation

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The C-seal: A Biofragmentable Drain Protecting the Stapled Colorectal Anastomosis from Leakage
07:51

The C-seal: A Biofragmentable Drain Protecting the Stapled Colorectal Anastomosis from Leakage

Published on: November 4, 2010

Area of Science:

  • Gastroenterology
  • Surgical Oncology
  • Radiology

Background:

  • Colorectal surgery frequently involves anastomoses, which can lead to leakage.
  • Postoperative complications require accurate and timely diagnosis.

Purpose of the Study:

  • To assess the accuracy, interobserver variability, timing, and discordance with relaparotomy of postoperative radiological examinations for colorectal anastomoses.

Main Methods:

  • Retrospective analysis of 429 patients undergoing colorectal anastomosis between 2000 and 2005.
  • Radiological imaging (CT, contrast radiography) was performed only when clinical signs of leakage were present.
  • Clinical anastomotic leakage was defined by relaparotomy findings, perianal pus drainage, or digital examination.

Main Results:

  • Radiological evaluation was performed in 21% of patients (91/429).
  • Interobserver variability was 10% for CT and 14% for contrast radiography.
  • Sensitivity and negative predictive value were 65% and 73%, respectively. 52% of patients with negative imaging had leakage upon relaparotomy, while 8% of those diagnosed with leakage had an intact anastomosis.

Conclusions:

  • Radiological imaging of colorectal anastomoses has limitations including high false-negative rates and significant interobserver variability.
  • Restrictive application and cautious interpretation of imaging are recommended.
  • Further research may explore improved diagnostic strategies for anastomotic leakage.