Re-staging nasopharynx carcinoma treated with chemoradiation. There is an intrinsically T1 and T2 hyperintense lesion with a complete hemosiderin rim in the left midbrain. The lesion now measures up to 3 mm, previously 5 mm. There is no associated enhancement or associated surrounding edema. There is an unchanged punctate lesion in the anterior right frontal lobe with mild T1 hyperintensity and susceptibility effect, as well as an associated developmental venous anomaly. There is an unchanged enhancing extra-axial mass overlying the left middle frontal gyrus that measures up to 7 mm in width with associated calvarial hyperostosis. There is no evidence acute infarct. The ventricles and basal cisterns are unchanged in size and configuration with prominence of the left lateral ventricle choroid plexus glomus that likely represents hyperplasia. There is no midline shift or herniation. There is no appreciable residual nasopharyngeal mass.
1. Decrease in size of the left midbrain lesion, which is compatible with a cavernous malformation. 2. A lesion in the anterior right frontal lobe is also compatible with a cavernous malformation and is unchanged.2. The small extra-axial lesion overlying the left middle frontal gyrus is unchanged and likely represents a meningioma.3. No evidence of recurrent nasopharyngeal tumor.