case_images: PMC10354736_01
case_images: MRI head. A, Day 1 of PICU admission. Subtle bilateral high signal in the lentiform and caudate nuclei (arrows), swelling of the caudate nuclei, no restricted diffusion, contrast enhancement. MRS was non-specific (not shown). B, Day 5. Persistent basal ganglia changes, mild reduction in swelling of the caudate nuclei with reduced mass effect on the frontal horns of the lateral ventricles (arrows). C, Two months later, showing resolution of basal ganglia signal changes and swelling; frontal horns of lateral ventricles no longer compressed, but mild basal ganglia atrophy.
case_images: 10.1177_2329048X231184183-fig1.jpg
case_images: PMC10354736_01_10.1177_2329048X231184183-fig1.jpg
case_images: fig1-2329048X231184183
case_images: MRI brain at presentation showed subtle symmetrical signal changes around the basal ganglia and hippocampi, but no cortical abnormality (Figure 1A). Repeat imaging four days later showed more obvious FLAIR hyperintensity of the caudate and putamen (Figure 1B). Two months later, the signal intensity and swelling of the putamina and caudate nuclei had significantly reduced though there was mild atrophy of the basal ganglia (Figure 1C).