Pituitary apoplexy MRI: Difference between revisions

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==MRI==
==MRI==
*[[MRI]] is done if the [[CT scan]] is suspicious for pituitary apoplexy. [[MRI]] is more sensitive than [[CT scan]]. [[MRI]] scan is more accurate in distinguishing the soft tissues of the [[Pituitary gland|pituitary]] from the surrounding bony structures. [[MRI]] is also superior to [[CT scan]] for detecting [[ischemia]] and [[infarction]] in brain tissue. [[MRI]] may show:
*[[MRI]] is done if the [[CT scan]] is suspicious for pituitary apoplexy. [[MRI]] is more sensitive than [[CT scan]]. [[MRI]] scan is more accurate in distinguishing the soft tissues of the [[Pituitary gland|pituitary]] from the surrounding bony structures. [[MRI]] is also superior to [[CT scan]] for detecting [[ischemia]] and [[infarction]] in brain tissue. [[MRI]] may show:<ref name="pmid">{{cite journal |vauthors=Cho WJ, Joo SP, Kim TS, Seo BR |title=Pituitary apoplexy presenting as isolated third cranial nerve palsy with ptosis : two case reports |journal=J Korean Neurosurg Soc |volume=45 |issue=2 |pages=118–21 |year=2009 |pmid= |doi=10.3340/jkns.2009.45.2.118 |url=}}</ref><ref name="pmid19958874">{{cite journal |vauthors=Kupec JT, Goebel SU |title=The missing ring sign |journal=Am. J. Med. |volume=122 |issue=12 |pages=e1 |year=2009 |pmid=19958874 |doi=10.1016/j.amjmed.2009.06.014 |url=}}</ref>
**Enlargement of [[pituitary gland]].
**Enlargement of the [[pituitary gland]]
**Compression of [[optic chiasm]] and surrounding structures.<ref name="pmid">{{cite journal |vauthors=Cho WJ, Joo SP, Kim TS, Seo BR |title=Pituitary apoplexy presenting as isolated third cranial nerve palsy with ptosis : two case reports |journal=J Korean Neurosurg Soc |volume=45 |issue=2 |pages=118–21 |year=2009 |pmid= |doi=10.3340/jkns.2009.45.2.118 |url=}}</ref>
**Compression of [[optic chiasm]] and surrounding structures
**[[Hemorrhage]] evident by hyperintense center in [[pituitary gland]].<ref name="pmid19958874">{{cite journal |vauthors=Kupec JT, Goebel SU |title=The missing ring sign |journal=Am. J. Med. |volume=122 |issue=12 |pages=e1 |year=2009 |pmid=19958874 |doi=10.1016/j.amjmed.2009.06.014 |url=}}</ref>
**[[Hemorrhage]] evident by hyperintense center in the [[pituitary gland]]
**[[Necrosis]] evident by hypointense center in [[pituitary gland]].
**[[Necrosis]] evident by hypointense center in the [[pituitary gland]]
 
[[File:Sellar MRI depicting signs of a acute pituitary apoplexy in two patients (a) a hyperintense lesion impinging optical chiasm in noncontrasted T1-weighted scan and (b) a peripheral rim in a contrasted T1-weighted scan.jpg|center|400px|Sellar MRI depicting signs of a acute pituitary apoplexy in two patients (a) a hyperintense lesion impinging optical chiasm in noncontrasted T1-weighted scan and (b) a peripheral rim in a contrasted T1-weighted scan.]]
 
*The above figure shows a sellar [[MRI]] depicting signs of a acute pituitary apoplexy in two [[patients]] (a) hyperintense lesion impinging [[Optic chiasm|optical chiasm]] in noncontrasted T1-weighted scan and (b) peripheral rim in a contrasted T1-weighted scan.<ref name="GlezerBronstein2015">{{cite journal|last1=Glezer|first1=Andrea|last2=Bronstein|first2=Marcello D.|title=Pituitary apoplexy: pathophysiology, diagnosis and management|journal=Archives of Endocrinology and Metabolism|volume=59|issue=3|year=2015|pages=259–264|issn=2359-3997|doi=10.1590/2359-3997000000047}}</ref>
 
*[[MRI]] can also be done to determine response to [[therapy]].
*[[MRI]] can also be done to determine response to [[therapy]].
 
<br>
[[File:Pituitary-macroadenoma-necrotic-1marked reduced.jpg|center|MRI showing necrotic pituitary adenoma (Source: Case courtesy of A.Prof Frank Gaillard, Radiopaedia.org, rID: 17664)|frame]]
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==References==
==References==
{{reflist|2}}
{{reflist|2}}


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Latest revision as of 16:26, 18 October 2017

Pituitary apoplexy Microchapters

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Akshun Kalia M.B.B.S.[2]

Overview

MRI is done if the CT scan is suspicious for pituitary apoplexy. MRI is more sensitive than CT scan. MRI is more accurate in distinguishing the soft tissues of the pituitary from the surrounding bony structures. MRI is also superior to CT scan for detecting ischemia and infarction in brain tissue.

MRI


MRI showing necrotic pituitary adenoma (Source: Case courtesy of A.Prof Frank Gaillard, Radiopaedia.org, rID: 17664)


References

  1. Cho WJ, Joo SP, Kim TS, Seo BR (2009). "Pituitary apoplexy presenting as isolated third cranial nerve palsy with ptosis : two case reports". J Korean Neurosurg Soc. 45 (2): 118–21. doi:10.3340/jkns.2009.45.2.118.
  2. Kupec JT, Goebel SU (2009). "The missing ring sign". Am. J. Med. 122 (12): e1. doi:10.1016/j.amjmed.2009.06.014. PMID 19958874.

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