Pheochromocytoma MRI
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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.