Desmoid tumor MRI: Difference between revisions

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*MRI is preferred over CT, especially for truncal and extremity tumors
*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:<ref name="radio">Desmoid tumor. Radiopedia(2015) http://radiopaedia.org/articles/aggressive-fibromatosis. Accessed on January 20, 2015</ref><ref name="pmid15788583">{{cite journal| author=Azizi L, Balu M, Belkacem A, Lewin M, Tubiana JM, Arrivé L| title=MRI features of mesenteric desmoid tumors in familial adenomatous polyposis. | journal=AJR Am J Roentgenol | year= 2005 | volume= 184 | issue= 4 | pages= 1128-35 | pmid=15788583 | doi=10.2214/ajr.184.4.01841128 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15788583  }} </ref><ref name="pmid9265665">{{cite journal| author=Vandevenne JE, De Schepper AM, De Beuckeleer L, Van Marck E, Aparisi F, Bloem JL et al.| title=New concepts in understanding evolution of desmoid tumors: MR imaging of 30 lesions. | journal=Eur Radiol | year= 1997 | volume= 7 | issue= 7 | pages= 1013-9 | pmid=9265665 | doi=10.1007/s003300050243 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9265665  }} </ref><ref name="pmid16357411">{{cite journal| author=Lee JC, Thomas JM, Phillips S, Fisher C, Moskovic E| title=Aggressive fibromatosis: MRI features with pathologic correlation. | journal=AJR Am J Roentgenol | year= 2006 | volume= 186 | issue= 1 | pages= 247-54 | pmid=16357411 | doi=10.2214/AJR.04.1674 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16357411  }} </ref>
*MRI characteristics of desmoid tumors are variable depending on their cellularity and fibrous content:<ref name="radio">Desmoid tumor. Radiopedia(2015) http://radiopaedia.org/articles/aggressive-fibromatosis. Accessed on January 20, 2015</ref><ref name="pmid15788583">{{cite journal| author=Azizi L, Balu M, Belkacem A, Lewin M, Tubiana JM, Arrivé L| title=MRI features of mesenteric desmoid tumors in familial adenomatous polyposis. | journal=AJR Am J Roentgenol | year= 2005 | volume= 184 | issue= 4 | pages= 1128-35 | pmid=15788583 | doi=10.2214/ajr.184.4.01841128 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15788583  }} </ref><ref name="pmid9265665">{{cite journal| author=Vandevenne JE, De Schepper AM, De Beuckeleer L, Van Marck E, Aparisi F, Bloem JL et al.| title=New concepts in understanding evolution of desmoid tumors: MR imaging of 30 lesions. | journal=Eur Radiol | year= 1997 | volume= 7 | issue= 7 | pages= 1013-9 | pmid=9265665 | doi=10.1007/s003300050243 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9265665  }} </ref><ref name="pmid16357411">{{cite journal| author=Lee JC, Thomas JM, Phillips S, Fisher C, Moskovic E| title=Aggressive fibromatosis: MRI features with pathologic correlation. | journal=AJR Am J Roentgenol | year= 2006 | volume= 186 | issue= 1 | pages= 247-54 | pmid=16357411 | doi=10.2214/AJR.04.1674 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16357411  }} </ref>
**T1-weighted images:
{| class="wikitable"
****Desmoids may be hypointense or isointense to muscle
|+MRI characteristics of desmoid tumors
**T2-weighted images:
!MRI sequence
***Predominantly hyperintense (T2 hyperintensity may diminish over time as tumor cellularity decreases and collagen deposition increases)
!Characteristics
***Hypointense bands may be seen that represent dense collections of collagen bundles  
|-
***With gadolinium administration
|'''T1'''
****Desmoids typically show moderate to marked enhancement
|
****Hypointense bands may become more apparent because collagen bundles are not enhanced by contrast material
* Homogeneously isointense
* Hypointense
* Mildly hyperintense
* Low intensity signal
|-
|'''T1 C+ (Gd)'''
|
* Typically enhances avidly
|-
|'''T2/STIR'''
|
* High heterogeneous signal
* Predominantly hyperintense (T2 hyperintensity may diminish over time as tumor cellularity decreases and collagen deposition increases)
*Hypointense bands may be seen that represent dense collections of collagen bundles  
*With gadolinium administration
**Desmoids typically show moderate to marked enhancement
**Hypointense bands may become more apparent because collagen bundles are not enhanced by contrast material
|-
|'''GE'''
|
* Peripheral areas of smooth low signal intensity that do not represent calcification or hemorrhage are characteristic
|}
<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 19:05, 1 March 2019

Desmoid tumor Microchapters

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Case #1

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:[1][2][3][4]
MRI characteristics of desmoid tumors
MRI sequence Characteristics
T1
  • Homogeneously isointense
  • Hypointense
  • Mildly hyperintense
  • Low intensity signal
T1 C+ (Gd)
  • Typically enhances avidly
T2/STIR
  • High heterogeneous signal
  • Predominantly hyperintense (T2 hyperintensity may diminish over time as tumor cellularity decreases and collagen deposition increases)
  • Hypointense bands may be seen that represent dense collections of collagen bundles
  • With gadolinium administration
    • Desmoids typically show moderate to marked enhancement
    • Hypointense bands may become more apparent because collagen bundles are not enhanced by contrast material
GE
  • Peripheral areas of smooth low signal intensity that do not represent calcification or hemorrhage are characteristic
  • MRI of desmoid tumor[5]

    MRI of desmoid tumor[5]

Reference

  1. ↑ 1.0 1.1 Desmoid tumor. Radiopedia(2015) http://radiopaedia.org/articles/aggressive-fibromatosis. Accessed on January 20, 2015
  2. ↑ Azizi L, Balu M, Belkacem A, Lewin M, Tubiana JM, Arrivé L (2005). "MRI features of mesenteric desmoid tumors in familial adenomatous polyposis". AJR Am J Roentgenol. 184 (4): 1128–35. doi:10.2214/ajr.184.4.01841128. PMID 15788583.
  3. ↑ Vandevenne JE, De Schepper AM, De Beuckeleer L, Van Marck E, Aparisi F, Bloem JL; et al. (1997). "New concepts in understanding evolution of desmoid tumors: MR imaging of 30 lesions". Eur Radiol. 7 (7): 1013–9. doi:10.1007/s003300050243. PMID 9265665.
  4. ↑ Lee JC, Thomas JM, Phillips S, Fisher C, Moskovic E (2006). "Aggressive fibromatosis: MRI features with pathologic correlation". AJR Am J Roentgenol. 186 (1): 247–54. doi:10.2214/AJR.04.1674. PMID 16357411.
  5. ↑ Desmoid Tumor mri. https://en.wikipedia.org/wiki/Aggressive_fibromatosis#/media/File:MRI_desmoid_T1_fl2d_FS.jpg

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