Nasopharyngeal carcinoma MRI: Difference between revisions

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Revision as of 19:37, 16 September 2015

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

Overview

Head and neck MRI may be helpful in the diagnosis of nasopharyngeal carcinoma. Findings on MRI suggestive of nasopharyngeal carcinoma include dural thickening and bone marrow infilteration.

MRI

MRI may be diagnostic of nasopharyngeal carcinoma. Findings on MRI scan suggestive of nasopharyngeal carcinoma include:^[1]


MRI Component	Features

T1	typically isointense to muscle
T1 C+ (Gd)	post contrast sequences should be fat saturated prominent heterogeneous enhancement is typical perineural extension should be sought
T2	isointense to somewhat hyperintense to muscle fat saturation is helpful 5 fluid in the middle ear is a helpful marker

References

↑ http://radiopaedia.org/articles/nasopharyngeal-carcinoma

Template:WikiDoc Sources

[1] ttp://radiopaedia.org/articles/nasopharyngeal-carcinoma

[1]

@@ Line 7: / Line 7: @@
 ==MRI==
-MRI is more sensitive to perineural spread and for demonstrating early the bone marrow changes of infiltration (see normal bone marrow signal of the clivus), although not all bone marrow changes represent [[tumor]] extension. Similarly dural thickening may be both evidence of tumour infiltration or reactive [[hyperplasia]].
+[[MRI]] may be diagnostic of [[nasopharyngeal carcinoma]]. Findings on MRI scan suggestive of nasopharyngeal carcinoma include:<ref>http://radiopaedia.org/articles/nasopharyngeal-carcinoma</ref>
-*T1: typically isointense to muscle
+{| style="border: 0px; font-size: 90%; margin: 3px; width: 600px" align=center
-*T2
+|valign=top|
-**isointense to somewhat hyperintense to muscle
+|+
-**fat saturation is helpful 5
+! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|MRI Component}}
-**fluid in the middle ear is a helpful marker
+! style="background: #4479BA; width: 400px;" | {{fontcolor|#FFF|Features}}
-*T1 C+ (Gd)
+|-
-**post contrast sequences should be fat saturated
+| style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |
-**prominent [[heterogeneous]] enhancement is typical
+:T1
-**[[perineural]] extension should be sought
+| style="padding: 5px 5px; background: #F5F5F5;" |
-Post radiotherapy fibrosis can be distinguished from recurrent / residual tumour on MR if the fibrosis is mature. In such cases fibrotic scarring is of low signal intensity on T2 and does not demonstrate enhancement. Early fibrotic change cannot be distinguished from residual/recurrent tumour as both may be hyperintense on T2 and demonstrate enhancement.<ref>http://radiopaedia.org/articles/nasopharyngeal-carcinoma</ref>
+*typically isointense to muscle
+|-
+| style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
+:T1 C+ (Gd)
+| style="padding: 5px 5px; background: #F5F5F5;" |
+*post contrast sequences should be fat saturated
+*prominent [[heterogeneous]] enhancement is typical
+*perineural extension should be sought
+|-
+| style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
+:T2
+| style="padding: 5px 5px; background: #F5F5F5;" |
+*isointense to somewhat hyperintense to muscle
+*fat saturation is helpful 5
+*fluid in the middle ear is a helpful marker
+|}
 ==References==
 {{Reflist|2}}

Nasopharyngeal carcinoma MRI: Difference between revisions

Revision as of 19:37, 16 September 2015

Overview

MRI

References

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