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RID35194 eye-of-the-tiger sign

synonym

tiger eye sign

definition

Hyperintense longitudinal stripe in the middle of a hypointense globus pallidus, caused by iron deposition, resembles a tiger's eye on T2-weighted MRI. Usually suggets Hallervorden-Spatz disease, but may be similar in extrapyramidal Parkinsonian disorder.

comment

http://radiology.rsna.org/cgi/content/full/217/3/895