<prompt> Hot Cross Bun Sign on MRI is seen in-Multisystem atrophyLewy body dementiaProgressive supranuclear palsyAlzeihmers disease  <response>: HOT CROSS BUN SIGN - cross shaped hyperintensity in the center of pons It is a classic feature of Multisystem atrophy type - C Multisystem atrophy type - c has involvement of pontocerebellar pathway Figure: hot cross bun sign - MSA-C Figure showing Humming bird sign in Progressive supranuclear palsy. Figure showing Mickey-Mouse sign in Progressive supranuclear palsy. 