 There is a 2 mm focus of residual enhancement along the right medial frontal gyrus which is slightly smaller than on the previous exam where it measured 3 mm. There is no significant edema or mass effect. There are no new lesions or new abnormal enhancement in the brain parenchyma. There is diffuse periventricular and subcortical white matter hyperintensities, likely consistent with postradiation changes, slightly progressed from previous exam. There is no midline shift or mass effect. No extra-axial fluid collection is identified.Normal flow-voids are demonstrated in the major intracranial vascular structures. The midline structures and craniocervical junction are within normal limits. There is mucosal thickening involving the right more than left maxillary sinuses.There is an enhancing focus in the right parietal bone, which was also present on previous MRI from 12/6/2014, likely nonspecific.
Continued interval reduction in the size of the right frontal metastasis. No new lesions seen.Mild interval progression of the periventricular and subcortical hyperintensities related to postradiation changes.