Eye of the tiger anomaly of globus pallidus
http://purl.obolibrary.org/obo/HP_0002454
The presence, on T2-weighted magnetic resonance imaging, of markedly low signal intensity if the globus pallidus that surrounds a central region of high signal intensity in the anteromedial globus pallidus, producing an eye-of-the-tiger appearance. [ HPO:probinson PMID:19881070 PMID:11110959 ]
Term info
- UMLS:C4025705
This sign is observed upon magnetic resonance tomography (MRI). It can be seen in several diseases including Hallervorden-Spatz syndrome, where the pathophysiology has been hypothesized to be related to iron deposition in the globus pallidus (associated with low signal intensity on T2-weighted images) accompanied by other pathological processes such as gliosis and water accumulation that are responsible for the high signal intensity at the central globus pallidus.
The presence, on T2-weighted magnetic resonance imaging, of markedly low signal intensity if the globus pallidus that surrounds a central region of high signal intensity in the anteromedial globus pallidus, producing an eye-of-the-tiger appearance.
HP:0002454