On MRI brain without contrast results, ordered to evaluate spinocerebellar dis, with ataxia and history of left mastectomy followed by FLAP reconstruction from abdominal fat: can you tell me what relationship, if any, there can be with abnormal signal intensities of both cerebral hemispheres and the pons, plus mucosal thickening in the ethmoid air cells bilaterally, as well as in the left mastoid air cells, observed on the same MRI?