Pheochromocytoma MRI: Difference between revisions
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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><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> | 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><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 slightly hypointense to the remainder of the adrenal gland, if there is a necrosis and/or haemorrhage then the signal will be more heterogeneous. | :* T1 slightly hypointense to the remainder of the adrenal gland, if there is a necrosis and/or haemorrhage then the signal will be more heterogeneous. | ||
:* T2 markedly hyperintense ''' | :* T2 markedly hyperintense '''[[Lightbulb sign|light bulb sign]]''', helpful in the diagnosis, areas of necrosis/haemorrhage/calcification will alter signal. other adrenal tumors isointense such as liver. | ||
:* T1 C+ (Gd) heterogenous enhancement is prolonged, persisting for as long as 50 minute | :* T1 C+ (Gd) heterogenous enhancement is prolonged, persisting for as long as 50 minute | ||
:* Increased attenuation on nonenhanced CT (>20 Hounsfield units. | :* Increased attenuation on nonenhanced CT (>20 Hounsfield units. | ||
Revision as of 17:38, 7 July 2017
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ahmad Al Maradni, M.D. [2]
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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][2]
- T1 slightly hypointense to the remainder of the adrenal gland, if there is a necrosis and/or haemorrhage then the signal will be more heterogeneous.
- T2 markedly hyperintense light bulb sign, helpful in the diagnosis, areas of necrosis/haemorrhage/calcification will alter signal. other adrenal tumors isointense such as liver.
- T1 C+ (Gd) heterogenous enhancement is prolonged, persisting for as long as 50 minute
- Increased attenuation on nonenhanced CT (>20 Hounsfield units.
- Variable mass size and vascularity and may be 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.