Desmoid tumor MRI: Difference between revisions

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**Find out the need for treatment
**Find out the need for treatment
*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:
*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:
**T1-weighted images:
****Desmoids may be hypointense or isointense to muscle
****Desmoids may be hypointense or isointense to muscle
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***With gadolinium administration
***With gadolinium administration
****Desmoids typically show moderate to marked enhancement
****Desmoids typically show moderate to marked enhancement
****Hypointense bands may become more apparent because collagen bundles are not enhanced by contrast material<ref name="radio">Desmoid tumor. Radiopedia(2015) http://radiopaedia.org/articles/aggressive-fibromatosis. Accessed on January 20, 2015</ref>
****Hypointense bands may become more apparent because collagen bundles are not enhanced by contrast material
<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 18:54, 1 March 2019

Desmoid tumor Microchapters

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Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Desmoid tumor from other Diseases

Epidemiology and Demographics

Risk Factors

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

CT

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Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

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]
    • T1-weighted images:
        • Desmoids may be hypointense or isointense to muscle
    • T2-weighted images:
      • 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

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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