Fig. 1.

Magnetic resonance imaging (MRI) features. (A) Axial diffusion-weighted imaging (DWI) shows restricted diffusion within the left globus pallidus. (B) Follow-up imaging 3 months post stroke shows normalization of DWI and complete resolution with no residual changes on T2-weighed imaging (T2WI, (C)). (D) Axial T2WI at the age of 2 years shows slightly delayed myelination in the centrum semiovale, not only posteriorly and superiorly to the occipital horns but also extending anteriorly around the bodies of the lateral ventricles. Axial T1WI (E) shows enlargement of the frontal horns and adjacent germinolytic cysts. Coronal FLAIR (F) and sagittal T1W images (G) show selective atrophy of the superior vermis (culmen). (H) Long-TE MR spectroscopy chemical shift imaging demonstrates a lactate peak at 1.33 ppm within the cerebrospinal fluid.