Fig. 4

a, Ultrasonography image through the mastoid fontanel of a 14-day-old neonate born at 26 weeks of gestation show a cerebellar hemorrhage (arrows). b, Coronal T2-weighted image at 2 months of life reveals encephalomalacic changes within the right cerebellar hemisphere with T2-hypointense foci representing deposition of blood products. c, Sagittal T1- and d, Coronal T2-weighted MR images of a 3-year-old boy born at 25 weeks gestation reveal a small posterior fossa, marked reduction in the size of the cerebellar hemispheres, which have a skeletonized appearance and appear more affected compared to the small vermis. Together with the pontine hypoplasia, constellation of findings suggest disruption of the cerebellar development as a sequela of prematurity. In addition, a T2-hypointense signal is noted in the left cerebellar folia suggesting hemosiderin deposition due to remote hemorrhage. Finally, a thinned corpus callosum and encephalomalacic changes in the supratentorial brain are also seen