<prompt> Tiger eye sign on MRI is seen in -Halloverden spatz diseaseCHPSAchalasia CardiaNone  <response>: Ans. is a i.e., Halloverden spatz diseaseo Tiger eye is an abnormal T2 signal in the globus pallidus seen in Pantothenate kinase-2 PANK-2 mutation of Holloverden spat disease. 