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Clinical findings of base of the skull metastasis: (a) MRI showing destruction at the base of the skull (arrow). Possible infiltration of cerebral parenchyma. (b) Lesion of CN V 1; reduced blinking and chronic infection resulted. (c) Visible atrophy of masseteric muscle. Chin also moved to the right side when opening the mouth (arrow). (d) CN XII paresis without atrophy at this time.
