Multiple endocrine neoplasia type 2 MRI
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ammu Susheela, M.D. [2]
Overview
MRI
Pheochromocytoma
- MRI is the most sensitive modality for identification of pheochromocytomas, and is particularly useful in cases of extra-adrenal location. The overall sensitivity is said to be 98%.[1]
- T1
- Slightly hypointense to the remainder of the adrenal
- If necrotic and/or haemorrhagic then signal will be more heterogeneous
- T2
- Markedly hyperintense (lightbulb sign): this is a helpful feature
- Areas of necrosis/haemorrhage/calcification will alter signal
- T1 C+ (Gd)
- Heterogenous enhancement
- Enhancement is prolonged, persisting for as long as 50 minutes[2]
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Case courtesy of Dr G Balachandran, [7]
Reference
- ↑ Blake, Michael (2009). Adrenal imaging. Totowa, NJ: Humana Press. ISBN 193411586X.
- ↑ Reiser, Maximilian (2008). Magnetic resonance tomography. Berlin: Springer. ISBN 354029354X.
- ↑ "http://radiopaedia.org/">Radiopaedia.org
- ↑ "http://radiopaedia.org/cases/8550">rID: 8550
- ↑ "http://radiopaedia.org/">Radiopaedia.org
- ↑ "http://radiopaedia.org/cases/9920">rID: 9920
- ↑ "http://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="http://radiopaedia.org/cases/10249">rID: 10249