Pituitary adenoma MRI: Difference between revisions

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Revision as of 13:58, 30 September 2015

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

Overview

MRI Findings in Pituitary Adenoma

Macroadenoma

T1

typically isointense to grey matter

larger lesions are often heterogeneous and vary in signal due to areas of cystic change/necrosis/haemorrhage

T1 C+ (Gd)

A solid components demonstrates moderate to bright enhancement

T2

typically isointense to grey matter

larger lesions are often heterogeneous and vary in signal due to areas of cystic change / necrosis / haemorrhage

T2 gradient echo

most sensitive for detecting any haemorrhagic components, which appear as areas of signal loss calcification is rare, but should be excluded by reviewing CT scans

Patient #1: Pituitary marcoadenoma

MRI axial T1
MRI axial TI post-contrast
MRI sag T1
MRI axial FLAIR
MRI axial T2

References

@@ Line 1: / Line 1: @@
 __NOTOC__
 {{Pituitary adenoma}}
-{{CMG}}
+{{CMG}} {{AE}} {{AAM}}
 ==Overview==
-==MRI==
+==MRI Findings in Pituitary Adenoma==
-Tumors which cause visual difficulty are likely to be ''macroadenomata'' greater than 10 mm in diameter; tumors less than 10 mm are ''microadenomata''.
-The diagnosis is confirmed by testing hormone levels, and by radiographic imaging of the pituitary (for example, by [[CT scan]] or [[MRI]]).
+===Macroadenoma===
+*'''T1'''
+:*typically isointense to grey matter
+:*larger lesions are often heterogeneous and vary in signal due to areas of cystic change/necrosis/haemorrhage
+*'''T1 C+ (Gd)'''
+:*A solid components demonstrates moderate to bright enhancement
+*T2
+:*typically isointense to grey matter
+:*larger lesions are often heterogeneous and vary in signal due to areas of cystic change / necrosis / haemorrhage
+*T2 gradient echo
+most sensitive for detecting any haemorrhagic components, which appear as areas of signal loss
+calcification is rare, but should be excluded by reviewing CT scans
 '''Patient #1: Pituitary marcoadenoma'''
@@ Line 32: / Line 52: @@
 Pituitary-macroadenoma-MR-T2-01.jpg|MRI axial T2
-</gallery>
-'''Patient #2: MRI images demonstrate a pituitary marcoadenoma'''
-<gallery>
 Image: