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{{Papillary thyroid cancer}}
{{Papillary thyroid cancer}}
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==Overview==
==Overview==
MRI  may be helpful in the diagnosis of papillary thyroid cancer. MRI may also be performed to detect metastases of papillary thyroid cancer to brain and bones.
[[MRI]] may be helpful in the [[diagnosis]] of papillary thyroid cancer. It may be suggestive of [[lymph node]] involvement as the first presentation of papillary thyroid cancer on [[MRI]] [[imaging]].
==MRI==
*[[MRI]]  may be helpful in the [[diagnosis]] of papillary thyroid cancer. It may be suggestive of [[lymph node]] involvement as the first presentation of papillary thyroid cancer on [[MRI]] [[imaging]].
*[[MRI]] findings associated with [[Adenopathy|nodal]] involvement include:<ref name="HoangVanka2013">{{cite journal|last1=Hoang|first1=Jenny K.|last2=Vanka|first2=Jyotsna|last3=Ludwig|first3=Benjamin J.|last4=Glastonbury|first4=Christine M.|title=Evaluation of Cervical Lymph Nodes in Head and Neck Cancer With CT and MRI: Tips, Traps, and a Systematic Approach|journal=American Journal of Roentgenology|volume=200|issue=1|year=2013|pages=W17–W25|issn=0361-803X|doi=10.2214/AJR.12.8960}}</ref>
**[[Cystic]] components
**[[Calcification]]
** Hyperintensity on T1 due to proteinaceous or [[hemorrhagic]] content
* Papillary thyroid cancer may appear as a heterogeneous, enhancing [[mass]] on T1-weighted [[MRI]] images.<ref name="HoangBranstetter2013">{{cite journal|last1=Hoang|first1=Jenny K.|last2=Branstetter|first2=Barton F. IV|last3=Gafton|first3=Andreia R.|last4=Lee|first4=Wai K.|last5=Glastonbury|first5=Christine M.|title=Imaging of thyroid carcinoma with CT and MRI: approaches to common scenarios|journal=Cancer Imaging|volume=13|issue=1|year=2013|pages=128–139|issn=14707330|doi=10.1102/1470-7330.2013.0013}}</ref>
*[[MRI]] [[imaging]] may also be helpful for assessment of [[thyroid cancer]] recurrence.


==Key MRI Findings in Papillary thyroid cancer==
'''MRI Examples of Papillary thyroid cancer:'''
* MRI, although probably more sensitive that CT, is nonetheless still far from perfect with a sensitivity of only 67% 2. This is largely a result of the fact that as many as half involved nodes found histologically following surgery, being less than 3 mm in diameter 2.
[[File:Papillary thyroud carcinoma- Invasive.jpg|thumb|center|Papillary thyroid carcinoma- Invasive<ref name="radio"> Image courtesy of  Dr Ian Bickle. [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/35835 ‘’here’’].[http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>]]
* As discussed above, nodes have a tendency to become cystic. The cystic component will have near-fluid attenuation. The solid metastatic component will appear 2:
* General signal characteristics include:
* T1
:* hypointense cf. muscle
:* enhancement best seen with fat suppression
* T2: variable 2
:* Hypointense: 34%
:* Isointense: 45%
:* Hyperintense: 21%
 
==MRI Examples of Papillary thyroid cancer==
[[File:Papillary thyroud carcinoma- Invasive.jpg|thumb|center|Papillary thyroud carcinoma- Invasive<ref name=radio> Image courtesy of  Dr Ian Bickle. [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/35835 ‘’here’’].[http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>]]


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
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Latest revision as of 23:34, 29 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sahar Memar Montazerin, M.D.[2] Ammu Susheela, M.D. [3]

Overview

MRI may be helpful in the diagnosis of papillary thyroid cancer. It may be suggestive of lymph node involvement as the first presentation of papillary thyroid cancer on MRI imaging.

MRI

MRI Examples of Papillary thyroid cancer:

Papillary thyroid carcinoma- Invasive[3]

References

  1. Hoang, Jenny K.; Vanka, Jyotsna; Ludwig, Benjamin J.; Glastonbury, Christine M. (2013). "Evaluation of Cervical Lymph Nodes in Head and Neck Cancer With CT and MRI: Tips, Traps, and a Systematic Approach". American Journal of Roentgenology. 200 (1): W17–W25. doi:10.2214/AJR.12.8960. ISSN 0361-803X.
  2. Hoang, Jenny K.; Branstetter, Barton F. IV; Gafton, Andreia R.; Lee, Wai K.; Glastonbury, Christine M. (2013). "Imaging of thyroid carcinoma with CT and MRI: approaches to common scenarios". Cancer Imaging. 13 (1): 128–139. doi:10.1102/1470-7330.2013.0013. ISSN 1470-7330.
  3. Image courtesy of Dr Ian Bickle. Radiopaedia (original file ‘’here’’.Creative Commons BY-SA-NC

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