Fig 2.

Case 10. Axial postcontrast T1-weighted images of a 27-year-old male patient with a 2-year history of seizures and headaches. A–C, There is an irregular enhancing lesion with a central tunnel in the left parietal lobe on baseline MR imaging. No active lesion can be seen in the occipital and temporal lobes. D, Eleven months later, a migrated lesion with ringlike enhancement is detected in the left occipital lobe. E and F, The lesion continues migrating to the left temporal lobe, showing typical tunnel-like enhancement 38 months after baseline MR imaging. The initial lesion in the left parietal lobe has regressed with no enhancement.