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 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 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.]] | |||
*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. | |||
*MRI can also be done to determine response to therapy. | |||
==References== | ==References== | ||
Revision as of 13:51, 27 July 2017
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Pituitary apoplexy Microchapters |
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Treatment |
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Case Studies |
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Pituitary apoplexy MRI On the Web |
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American Roentgen Ray Society Images of Pituitary apoplexy MRI |
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Risk calculators and risk factors for Pituitary apoplexy MRI |
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:
_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.
- MRI can also be done to determine response to therapy.
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.