|
FIG 4. Patient 16. Pre- and post-treatment images in a 13-year-old patient with a malignant hypothalamic glioma.
A, Pretreatment FLAIR images (top row) reveal the hypothalamic mass, hydrocephalus with symmetric dilatation of the lateral ventricles, and a grade 2 PVH. Dav images (bottom row) demonstrate normal-appearing periventricular white matter. The Dav value was 0.79, only 3% above normal for the patient’s age.
B, Repeat MR study was performed 7 days after partial resection and shunt placement. FLAIR images (top row) reveal residual tumor in the hypothalamus and asymmetric ventricular dilatation. The left lateral ventricle is smaller, but the right lateral ventricle is larger, consistent with unilateral obstruction at the foramen of Monro. The Dav value was also asymmetric (bottom row). In the left periventricular white matter, it had decreased to 0.76, whereas in the right periventricular white matter, it had increased to 0.80.
|