Pheochromocytoma MRI: Difference between revisions

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Revision as of 13:32, 14 September 2015

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Ahmad Al Maradni, M.D. [2]

Head, neck, chest, and abdominal MRI may be helpful in the diagnosis of pheochromocytoma.

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 (lightbulb sign, helpful in the diagnosis), areas of necrosis/haemorrhage/calcification will alter signal
T1 C+ (Gd) heterogenous enhancement is prolonged, persisting for as long as 50 minutes

T2 weighted MRI of the head, neck, and chest, and abdomen can help localize the tumor

Patient #1: Bladder pheochromocytoma

Patient #2: Abdominal pheochromocytoma

@@ Line 9: / Line 9: @@
 :*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 (lightbulb sign, helpful in the diagnosis), areas of necrosis/haemorrhage/calcification will alter signal
-:*T1 C+ (Gd) heterogenous enhancement is prolonged, persisting for as long as 50 minutes 4
+:*T1 C+ (Gd) heterogenous enhancement is prolonged, persisting for as long as 50 minutes
-*[[Spin-spin relaxation time|T2]] weighted MRI of the [[head]], [[neck]], and [[chest]], and [[abdomen]] can help localize the tumor.
+*[[Spin-spin relaxation time|T2]] weighted MRI of the [[head]], [[neck]], and [[chest]], and [[abdomen]] can help localize the tumor