Desmoid tumor MRI: Difference between revisions
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**Assess resectability | **Assess resectability | ||
**Find out the need for treatment | **Find out the need for treatment | ||
*MRI is preferred over CT, especially for truncal and extremity tumors MRI characteristics of desmoid tumors are variable | *MRI is preferred over CT, especially for truncal and extremity tumors | ||
*MRI characteristics of desmoid tumors are variable depending on their cellularity and fibrous content: | |||
*Desmoids may be hypointense or isointense to muscle on T1-weighted images; they are predominantly hyperintense on T2-weighted images, but hypointense bands may be seen that represent dense collections of collagen bundles [73]. T2 hyperintensity may diminish over time as tumor cellularity decreases and collagen deposition increases [74]. With the administration of gadolinium, desmoids typically show moderate to marked enhancement, and the hypointense bands may become more apparent because collagen bundles are not enhanced by contrast material [75]. Its appearance is characterized by their dense cellularity. Typical signal characteristics include:<ref name="radio">Desmoid tumor. Radiopedia(2015) http://radiopaedia.org/articles/aggressive-fibromatosis. Accessed on January 20, 2015</ref> | |||
<gallery>MRI_desmoid_T1_fl2d_FS.jpg | MRI of desmoid tumor<ref name=aa>Desmoid Tumor mri. https://en.wikipedia.org/wiki/Aggressive_fibromatosis#/media/File:MRI_desmoid_T1_fl2d_FS.jpg</ref></gallery> | <gallery>MRI_desmoid_T1_fl2d_FS.jpg | MRI of desmoid tumor<ref name=aa>Desmoid Tumor mri. https://en.wikipedia.org/wiki/Aggressive_fibromatosis#/media/File:MRI_desmoid_T1_fl2d_FS.jpg</ref></gallery> | ||
Revision as of 18:41, 1 March 2019
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Desmoid tumor Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Sara Mohsin, M.D.[2]Faizan Sheraz, M.D. [3]
Overview
Abdominal MRI may be diagnostic of desmoid tumor. On MRI, desmoid tumor is characterized by dense cellularity and loss of signal following fat saturation.[1]
MRI
- MRI is required in order to:
- Define the relationship of the tumor to adjacent structures
- Assess resectability
- Find out the need for treatment
- MRI is preferred over CT, especially for truncal and extremity tumors
- MRI characteristics of desmoid tumors are variable depending on their cellularity and fibrous content:
- Desmoids may be hypointense or isointense to muscle on T1-weighted images; they are predominantly hyperintense on T2-weighted images, but hypointense bands may be seen that represent dense collections of collagen bundles [73]. T2 hyperintensity may diminish over time as tumor cellularity decreases and collagen deposition increases [74]. With the administration of gadolinium, desmoids typically show moderate to marked enhancement, and the hypointense bands may become more apparent because collagen bundles are not enhanced by contrast material [75]. Its appearance is characterized by their dense cellularity. Typical signal characteristics include:[1]
-
![MRI of desmoid tumor[2]](/images/f/f1/MRI_desmoid_T1_fl2d_FS.jpg)
MRI of desmoid tumor[2]
![MRI of desmoid tumor[2]](/index.php/File:MRI_desmoid_T1_fl2d_FS.jpg)
Reference
- ↑ 1.0 1.1 Desmoid tumor. Radiopedia(2015) http://radiopaedia.org/articles/aggressive-fibromatosis. Accessed on January 20, 2015
- ↑ Desmoid Tumor mri. https://en.wikipedia.org/wiki/Aggressive_fibromatosis#/media/File:MRI_desmoid_T1_fl2d_FS.jpg
