Case 6. Case 6. Images of the brain of a 14-year-old boy with a 4-year history of seizures and left hemiparesis. A, Precontrast CT scan shows an extensive.

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Case 6. Case 6. Images of the brain of a 14-year-old boy with a 4-year history of seizures and left hemiparesis. A, Precontrast CT scan shows an extensive area of low attenuation in the right basal ganglia with a punctate calcification centrally. B, Axial T2-weighted image of the same section as the CT image in (A) shows hyperintense area in the right basal ganglia. However, calcification seen on CT image cannot be shown clearly on MR image. C–D, Postcontrast axial (C) and coronal (D) T1-weighted images show bead-shaped enhancement in the right basal ganglia. E–F, After 4 months, postcontrast axial (E) and coronal (F) T1-weighted images of the same patient show the tunnel-shaped enhancement in the right parietal lobe with small amounts of residual bead-shaped enhancement in the right basal ganglia, representing the migration of the worm and lesions shifting from the right basal ganglia to the right parietal lobe. Preoperative ELISA on serum and on CSF revealed strongly positive against Spirometra mansoni. A live worm was found at craniotomy. T. Song et al. AJNR Am J Neuroradiol 2007;28:1700-1705 ©2007 by American Society of Neuroradiology