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Figure 5b. End-stage or chronic PVL in a preterm (28 weeks gestation) twin delivered prematurely because of maternal preeclampsia. (a) Sagittal cranial US scan of the 7-month-old infant shows enlarged lateral ventricles with irregular margins (arrows). (b) Follow-up axial CT scan obtained at 1 year of age shows the same findings (arrows), which are consistent with decreased myelination in the periventricular location and ex vacuo ventricular dilatation. (c) Axial fluid-attenuated inversion-recovery MR image obtained at 1 year of age shows a thin band of T2 hyperintensity along the ventricular surface (arrows), representing gliosis. Note that the deep, prominent sulci nearly abut the ventricular surface due to loss of white matter volume.
