Appendicitis ultrasound

Jump to navigation Jump to search

Appendicitis Microchapters


Patient Information


Historical Perspective




Differentiating Appendicitis from other Diseases

Epidemiology and Demographics

Risk Factors


Natural History, Complications and Prognosis


History and Symptoms

Physical Examination

Laboratory Findings

Diagnostic Scoring

X Ray




Other Imaging Findings

Other Diagnostic Studies


Medical Therapy


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


American Roentgen Ray Society Images of Appendicitis

All Images
Echo & Ultrasound
CT Images

Ongoing Trials at Clinical

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]


Ultrasound may be helpful in the diagnosis of appendicitis. Findings that are supportive of the diagnosis of appendicitis include noncompressible, dilated appendix, appendicolith, echogenic prominent pericaecal fat and periappeniceal fluid collection.


  • CT scans are preferred over ultrasounds for diagnosing appendicitis. However, ultrasound imaging presents with the least amount of radiation and is therefore the investigation of choice for young patients.[1][2][3]
  • 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.

Findings Supportive of Appendicitis

Findings that are supportive of the diagnosis of appendicitis include:[4]

  • 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=""></a>. From the case <a href="">rID: 26853</a>


  1. Pinto F, Pinto A, Russo A, Coppolino F, Bracale R, Fonio P, Macarini L, Giganti M (2013). "Accuracy of ultrasonography in the diagnosis of acute appendicitis in adult patients: review of the literature". Crit Ultrasound J. 5 Suppl 1: S2. doi:10.1186/2036-7902-5-S1-S2. PMC 3711731. PMID 23902717.
  2. Mostbeck G, Adam EJ, Nielsen MB, Claudon M, Clevert D, Nicolau C, Nyhsen C, Owens CM (2016). "How to diagnose acute appendicitis: ultrasound first". Insights Imaging. 7 (2): 255–63. doi:10.1007/s13244-016-0469-6. PMC 4805616. PMID 26883138.
  3. Hussain S, Rahman A, Abbasi T, Aziz T (2014). "Diagnostic accuracy of ultrasonography in acute appendicitis". J Ayub Med Coll Abbottabad. 26 (1): 12–7. PMID 25358207.
  4. Appendicitis. (27 August 2015). Accessed on December 7, 2015

Template:WH Template:WS