A 38-year-old man with barotrauma of the bilateral middle ears and right ethmoidal sinus.
A: The bilateral mastoid cavities, left middle ear cavity and right ethmoidal sinus show hyperintensity on T2WI. B: The bilateral globus pallidus shows symmetric hyperintensity on T2WI. C: Three months later, the same sites above show hyperintensity on T2WI, but the mucosa in right ethmoidal sinus is thicker than in the initial scan. D: The symmetric hyperintensity can be observed in the bilateral globus pallidus and in the bilateral white matter on T2WI.