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Related Concept Videos

Appendicitis-I: Introduction01:22

Appendicitis-I: Introduction

The appendix, a small, narrow, blind tube extending from the inferior part of the cecum, is widely regarded as a vestigial organ, having lost much of its original function through evolution. Despite its diminished role, the appendix can become inflamed, a condition known as appendicitis.
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
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Appendicitis is an acute inflammatory condition of the vermiform appendix, most commonly caused by obstruction of its lumen. The appendix is a narrow, blind-ended pouch that extends from the cecum, making it particularly prone to obstruction. Causes include fecaliths, lymphoid hyperplasia (often after viral infections), parasites, tumors, or foreign bodies. This obstruction initiates a cascade of pathological changes.Luminal Obstruction and Early InflammationAfter obstruction, normal mucosal...
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Appendicitis-II: Diagnostic Studies and Management

Diagnosing and managing appendicitis requires a structured and comprehensive approach that spans from initial assessment to postoperative care. Here is an overview of the process:
Diagnosing Appendicitis
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MRI features associated with acute appendicitis.

Marjolein M N Leeuwenburgh1, Sebastiaan Jensch, Jan W C Gratama

  • 1Department of Surgery, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands, m.m.leeuwenburgh@amc.uva.nl.

European Radiology
|September 10, 2013
PubMed
Summary
This summary is machine-generated.

Magnetic Resonance Imaging (MRI) can identify key features of appendicitis. An enlarged appendix, fat infiltration, and restricted diffusion are strongly associated with appendicitis, aiding diagnosis.

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Area of Science:

  • Radiology
  • Medical Imaging
  • Gastroenterology

Background:

  • Appendicitis diagnosis can be challenging.
  • MRI offers a non-invasive imaging modality for abdominal conditions.

Purpose of the Study:

  • To identify specific MRI features indicative of appendicitis.
  • To evaluate the diagnostic accuracy of these MRI features.

Main Methods:

  • Two expert radiologists reviewed 223 abdominal MRIs for suspected appendicitis.
  • Nine features were assessed: appendix diameter >7mm, appendicolith, fat infiltration, fluid, absence of gas, wall destruction, restricted diffusion, and focal collections.
  • Logistic regression analysis was used to correlate features with diagnosis.

Main Results:

  • Univariate analysis showed all nine features associated with appendicitis.
  • Multivariate analysis identified appendix diameter >7mm, peri-appendiceal fat infiltration, and restricted diffusion as significant indicators.
  • The presence of these three features yielded a 96% probability of appendicitis; absence yielded 2%.

Conclusions:

  • Appendix diameter >7mm, peri-appendiceal fat infiltration, and restricted diffusion are the strongest MRI predictors of appendicitis.
  • Combinations of these features significantly increase the probability of appendicitis.
  • The absence of these features effectively rules out appendicitis.