History of nasopharyngeal cancer and chemotherapy/radiation therapy, compare to previous measurements. No areas of diffusion restriction are seen to suggest acute infarction. No susceptibility weighted artifact is seen to suggest intracranial hemorrhage. Punctate T2/FLAIR hyperintense foci are nonspecific, however likely related to minimal small vessel seen disease. No mass lesions are seen within the brain parenchyma. No areas of abnormal enhancement are identified. Intracerebral flow voids are intact. No midline shift or herniation. Posttreatment changes are seen throughout the nasopharynx with diffuse mucosal edema, however no nasopharyngeal mass lesion is identified.Heterogeneous marrow signal and enhancement within the central skull base is unchanged and may be due to prior therapy. Soft tissue component along the clivus has decreased from the prior study dated 9/28/2014. No suprasellar cistern or optic canal mass is identified. There is no mass effect on the optic chiasm.Severe mucosal thickening and near complete opacification of the maxillary sinuses is noted. Partial opacification of the ethmoid air cells is present. There is complete opacification of the mastoid air cells.
1.Nasopharyngeal post-treatment changes without measurable tumor in this area.2.No change in central skull base enhancement and heterogenous marrow signal favored to be secondary to prior therapy.3.Persistent paranasal sinus and mastoid air cell opacification.