Fig. 1. Radiologic findings of Case 1. Initial axial T2-weighted magnetic resonance findings of a 54-year-old male patient diagnosed with anaplastic oligoastrocytoma (A and B), and sagittal and coronal T1-weighted images enhanced with gadolinium after the first craniotomy (C and D). Periventricular enhancement occurred after ifosphamide, carboplatin, and etoposide chemotherapy and intrathecal methotrexate (E and F). After treatment with temozolomide, leptomeningeal enhancement disappeared (G and H), and the T2-weighted signal intensity of the cerebellar lesion decreased (I).
