Desmoid tumor MRI: Difference between revisions

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{{CMG}} {{AE}}{{S.M.}}{{Faizan}}
==Overview==
==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.<ref name="radio">Desmoid tumor. Radiopedia(2015) http://radiopaedia.org/articles/aggressive-fibromatosis. Accessed on January 20, 2015</ref>
* MRI is preferred over CT, especially for truncal and extremity tumors
On [[MRI]], desmoid tumor is characterized by dense cellularity and loss of signal following fat saturation.<ref name="radio">Desmoid tumor. Radiopedia(2015) http://radiopaedia.org/articles/aggressive-fibromatosis. Accessed on January 20, 2015</ref>
==MRI==
==MRI==
*MRI is required in order to:
*MRI is required in order to:

Revision as of 19:06, 1 March 2019

Desmoid tumor Microchapters

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Historical Perspective

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Differentiating Desmoid tumor from other Diseases

Epidemiology and Demographics

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Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

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CT

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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

  • MRI is preferred over CT, especially for truncal and extremity tumors

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

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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