Pituitary apoplexy MRI: Difference between revisions
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==Overview== | ==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]] is done if the [[CT-scans|CT scan]] is suspicious for pituitary apoplexy. [[MRI]] is more sensitive than [[CT-scans|CT scan]]. [[MRI]] 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== | ==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 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: | ||
**Enlargement of pituitary gland. | **Enlargement of [[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.<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> | ||
**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 [[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> | ||
**Necrosis evident by hypointense center in pituitary gland. | **[[Necrosis]] evident by hypointense center in [[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.]] | [[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 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> | *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]]. | ||
Revision as of 18:45, 28 July 2017
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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 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 from the surrounding bony structures. MRI is also superior to CT scan for detecting ischemia and infarction in brain tissue. MRI may show:
- Enlargement of pituitary gland.
- Compression of optic chiasm and surrounding structures.[1]
- Hemorrhage evident by hyperintense center in pituitary gland.[2]
- Necrosis evident by hypointense center in pituitary gland.
_a_hyperintense_lesion_impinging_optical_chiasm_in_noncontrasted_T1-weighted_scan_and_(b)_a_peripheral_rim_in_a_contrasted_T1-weighted_scan.jpg)
- The above figure shows a sellar MRI depicting signs of a acute pituitary apoplexy in two patients (a) hyperintense lesion impinging optical chiasm in noncontrasted T1-weighted scan and (b) peripheral rim in a contrasted T1-weighted scan.[3]
References
- ↑ 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.
- ↑ 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.
- ↑ Glezer, Andrea; Bronstein, Marcello D. (2015). "Pituitary apoplexy: pathophysiology, diagnosis and management". Archives of Endocrinology and Metabolism. 59 (3): 259–264. doi:10.1590/2359-3997000000047. ISSN 2359-3997.