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Figures for:
Chiari Type II Malformation: Past, Present, and Future

[Neurosurg Focus 16(2), 2004. © 2004 American Association of Neurological Surgeons]


Figure 1. Sagittal T1-weighted MR image revealing the peglike appearance of the vermis extending to C-4 in a child with CM II.

Figure 2. Axial T2-weighted MR image obtained in a child with two subependymal heterotopias (open arrows). Note the marked culpocephaly despite a properly functioning shunt.

Figure 3. Sagittal T1-weighted MR image obtained in a child with a CM II, revealing several classic findings. The tentorium (arrows) inserts abnormally low, placing the torcular herophili just inside the rim of the foramen magnum. Polygyria is also seen throughout the hemisphere.

Figure 4. Sagittal T1-weighted MR image of the cervicothoracic spine obtained in a child, revealing a severe medullary kink at C3–4 (arrow). Note that the cerebellar vermis ends cephalad to the kink.

Figure 5. Sagittal T1-weighted MR image obtained in a child with myelomeningocele and CM II. The tectum is beaked (closed arrow) and the corpus callosum shows partial agenesis (open arrow).

Figure 6. Axial T2-weighted MR image obtained in a child with CM II and an enlarged massa intermedia (arrow).

Figure 7. Sagittal MR image obtained in a child with CM II and a large holocord syrinx.