Atypical teratoid rhabdoid tumor MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]Sabawoon Mirwais, M.B.B.S, M.D.[3]

Overview

Brain MRI is helpful in the diagnosis of atypical teratoid rhabdoid tumor. On MRI, atypical teratoid rhabdoid tumor is characterized by iso- to slight hyperintensity on T1-weighted imaging and hyperintensity on T2-weighted imaging. There is heterogeneous enhancement on contrast administration.

MRI

• Brain MRI may be helpful in the diagnosis of atypical teratoid rhabdoid tumor.
• Findings on MRI suggestive of atypical teratoid rhabdoid tumor are tabulated below:

MRI component	Findings
T1	Iso- to slightly hyperintense to grey matter (hemorrhagic areas can be more hyperintense)
T2	Generally hyperintense (hemorrhagic areas can be hypointense)
T1 with contrast	Heterogeneous enhancement

Images

MRI showing atypical teratoid rhabdoid tumor. Source: Case courtesy of Dr Andrew Dixon, Radiopaedia.org, rID: 10515