Fig. 9From: Neuroimaging assessment in Down syndrome: a pictorial reviewAxial (a) and sagittal (b) T1/3D of a 12-year-old girl with Down syndrome, showing small brainstem structures with enlargement of the IV ventricle. In particular, there is a reduced cranio-caudal diameter of the pons. Also, the agenesis of the splenium of corpus callosum, a finding that has been occasionally described in Down syndromeBack to article page