Appendicitis MRI

Appendicitis Microchapters

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Case #1

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

## Overview

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MRI may be helpful in the diagnosis of appendicitis. Magnetic resonance imaging has become the common technique for diagnosing appendicitis in children and pregnant patients.

## MRI

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MRI may be helpful in the diagnosis of appendicitis.[1]

Advantages of MRI

* The high dosage of radiation can be harmful for children and developing fetus, while posing a nearly negligible risk in healthy adults.
* The enlarged uterus displaces the appendix during the second and third trimesters of pregnancy, making it difficult to find by ultrasound. An MRI is therefore preferred.[1]

Findings

* On an MRI, a periappendiceal stranding appears as an increased fluid signal on the T2 weighted sequence (while it is reflected by fat stranding on a CT scan).[1][2]

Axial T2-Weighted MRI demonstrates a dilated fluid filled appendix with periappendiceal fat stranding and two appendicoliths
Source:Case courtesy of Dr Andrew Dixon, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/9644">rID: 9644</a>

## References

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1. ↑ 1.0 1.1 1.2 Appendicitis. Wikipedia (26 November 2015).https://en.wikipedia.org/wiki/Appendicitis#Imaging Accessed on December 7, 2015
2. ↑ Image courtesy of Radiologypics. Radiologypics

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