Appendicitis ultrasound: Difference between revisions

Jump to navigation Jump to search
m (Categories)
Line 22: Line 22:
*Echogenic prominent [[pericaecal]] fat
*Echogenic prominent [[pericaecal]] fat
*Periappeniceal fluid collection  
*Periappeniceal fluid collection  
 
[[Image:Appendicitis-perforated.png|thumb|center|500px|Inflammed appendix associated with perforation<br>Source:Case courtesy of Dr Maulik S Patel, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/26853">rID: 26853</a>]]
<gallery>
Appendicolith-on-ultrasound.jpg
 
Acute-appendicitis-paediatric-2.jpg
 
</gallery>
[[Appendicolith]] on ultrasound<ref name=radio> Image courtesy of Dr. Michael Sargent. [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/6004 ‘’here’’]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
 
Acute pediatric appendicitis<ref name=radio> Image courtesy of Dr. Michael Sargent. [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/6004 ‘’here’’]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
 
[[File:Appendicolith-2.jpg|left|175px|Presentations of appendicolith.<ref name=radio> Image courtesy of Dr Maulik S Patel, Radiopaedia.org, rID: 5881 [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/articles/appendicitis ‘’here’’]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>]]
 
<br/><br/><br/><br/><br/><br/><br/><br/>


==References==
==References==

Revision as of 17:38, 9 January 2018

Appendicitis Microchapters

Home

Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Appendicitis from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

Diagnostic Scoring

X Ray

CT

MRI

Ultrasound

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Appendicitis On the Web

Most recent articles

Most cited articles

Review articles

CME Programs

Powerpoint slides

Images

American Roentgen Ray Society Images of Appendicitis

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Appendicitis

CDC on Appendicitis

Appendicitis in the news

Blogs on Appendicitis

Directions to Hospitals Treating Appendicitis

Risk calculators and risk factors for Appendicitis

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Farwa Haideri [2]

Overview

Ultrasounds are a useful tool for diagnosing appendicitis. There are some limitations to the information provided by ultrasounds, such as sometimes ultrasonographic images of the iliac fossa show no abnormalities despite the presence of appendicitis.

Ultrasound

  • In general, whenever available, CT scans are preferred over ultrasounds for diagnosing appendicitis.
  • Ultrasound imaging presents the least amount of radiation and is therefore the investigation of choice for young patients.
  • It is the effective component in identifying abnormal appendixes, especially in thin patients.
  • The ultrasound technique is known as graded compression, which uses linear probes over sites of maximal thickness and gradually increasing pressure exerted to displace normal overlying bowel gas.[1]
  • In some cases (approximately 15%), ultrasonography of the iliac fossa does not reveal any abnormalities despite the presence of appendicitis.
    • This is true of early appendicitis before the appendix has become significantly distended, especially in adults, where larger amounts of fat and bowel gas make actually seeing the appendix technically difficult.
  • Despite these limitations, in experienced hands sonographic imaging can often distinguish between appendicitis and other diseases with very similar symptoms such as inflammation of the lymph nodes near the appendix or pain originating from other pelvic organs such as the ovaries or fallopian tubes.[2]

Findings Supportive of Appendicitis

Findings that are supportive of the diagnosis of appendicitis include:[1]

  • Aperistaltic, noncompressible, dilated appendix (>6 mm outer diameter)
  • Appendicolith
  • Distinct appendieal wall layers
  • Echogenic prominent pericaecal fat
  • Periappeniceal fluid collection
Inflammed appendix associated with perforation
Source:Case courtesy of Dr Maulik S Patel, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/26853">rID: 26853</a>

References

  1. 1.0 1.1 Appendicitis. Radiopaedia.org (27 August 2015). http://radiopaedia.org/articles/appendicitis Accessed on December 7, 2015
  2. Appendicitis. Wikipedia (26 November 2015). http://radiopaedia.org/articles/appendicitis Accessed on December 7, 2015

Template:WH Template:WS