Pheochromocytoma MRI: Difference between revisions
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==Overview== | ==Overview== | ||
[[Head]], [[neck]], [[chest]], and [[abdomen|abdominal]] MRI may be helpful in the diagnosis of pheochromocytoma. | [[Head]], [[neck]], [[chest]], and [[abdomen|abdominal]] [[Magnetic resonance imaging|MRI]] may be helpful in the diagnosis of pheochromocytoma. | ||
==Key MRI Findings in Pheochromocytoma== | ==Key MRI Findings in Pheochromocytoma== | ||
Key [[MRI]] findings in pheochromocytoma are:<ref name="radio">Pheochromocytoma. Dr Matt A. Morgan and Dr Frank Gaillard Gold Supporter since June 24, 2015">. Radiopaedia.org 2015.Page http://radiopaedia.org/articles/pheochromocytoma-2</ref> | Key [[MRI]] findings in pheochromocytoma are:<ref name="radio">Pheochromocytoma. Dr Matt A. Morgan and Dr Frank Gaillard Gold Supporter since June 24, 2015">. Radiopaedia.org 2015.Page http://radiopaedia.org/articles/pheochromocytoma-2</ref> | ||
* T1 | * T1-weighted: | ||
* T2 | ** Slightly hypointense to the remainder of the [[adrenal gland]], if there is [[necrosis]] and/or [[hemorrhage]] then the signal will be more heterogeneous<ref name="pmid8076587">{{cite journal| author=Bravo EL| title=Evolving concepts in the pathophysiology, diagnosis, and treatment of pheochromocytoma. | journal=Endocr Rev | year= 1994 | volume= 15 | issue= 3 | pages= 356-68 | pmid=8076587 | doi=10.1210/edrv-15-3-356 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=8076587 }}</ref> | ||
* T1 | * T2-weighted: | ||
** Markedly hyperintense light bulb sign, helpful in the diagnosis, areas of [[necrosis]]/[[hemorrhage]]/[[calcification]] will alter the signal. Other [[adrenal]] [[tumors]] are isointense such as the liver | |||
* Variable mass size | * T1 with [[gadolinium]] contrast: | ||
* [[Spin-spin relaxation time|T2]] weighted MRI of the [[head]], [[neck]], and [[chest]], and [[abdomen]] can help localize the tumor | ** Heterogenous enhancement is prolonged, persisting for as long as 50 minutes | ||
* Variable mass size | |||
* Vascularity | |||
* Bilateral | |||
* [[Spin-spin relaxation time|T2]] weighted MRI of the [[head]], [[neck]], and [[chest]], and [[abdomen]] can help localize the [[tumor]] | |||
'''Patient #1: Bladder pheochromocytoma''' | '''Patient #1: Bladder pheochromocytoma''' | ||
<gallery> | <gallery> | ||
Revision as of 14:41, 16 August 2017
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Pheochromocytoma MRI On the Web |
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American Roentgen Ray Society Images of Pheochromocytoma MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ahmad Al Maradni, M.D. [2] Mohammed Abdelwahed M.D[3]
Overview
Head, neck, chest, and abdominal MRI may be helpful in the diagnosis of pheochromocytoma.
Key MRI Findings in Pheochromocytoma
Key MRI findings in pheochromocytoma are:[1]
- T1-weighted:
- Slightly hypointense to the remainder of the adrenal gland, if there is necrosis and/or hemorrhage then the signal will be more heterogeneous[2]
- T2-weighted:
- Markedly hyperintense light bulb sign, helpful in the diagnosis, areas of necrosis/hemorrhage/calcification will alter the signal. Other adrenal tumors are isointense such as the liver
- T1 with gadolinium contrast:
- Heterogenous enhancement is prolonged, persisting for as long as 50 minutes
- Variable mass size
- Vascularity
- Bilateral
- T2 weighted MRI of the head, neck, and chest, and abdomen can help localize the tumor
Patient #1: Bladder pheochromocytoma
Patient #2: Abdominal pheochromocytoma
References
- ↑ Pheochromocytoma. Dr Matt A. Morgan and Dr Frank Gaillard Gold Supporter since June 24, 2015">. Radiopaedia.org 2015.Page http://radiopaedia.org/articles/pheochromocytoma-2
- ↑ Bravo EL (1994). "Evolving concepts in the pathophysiology, diagnosis, and treatment of pheochromocytoma". Endocr Rev. 15 (3): 356–68. doi:10.1210/edrv-15-3-356. PMID 8076587.