Eye of tiger sign on MRI is seen in: (A) Hallervorden spatz syndrome, (B) Progressive supra nuclear palsy, (C) Early onset levodopa - responsive Parkinsonism, (D) All of the above
Answer is D. The eye of tiger sign refers to abnormal low T2 signal on MRI in the globus pallidus with a logitudinal stripe of high signal (due to gliosis and spongiosis).