Neuroimaging findings in 38 patients with Moebius sequence

FindingNo. (%)
Flattening of the floor of the fourth ventricle due to bilateral absence of facial colliculus38 (100%)
Pons hypoplasia23 (60.5%)
Tectal beaking15 (39.5%)
Increased anteroposterior diameter of the mesencephalon12 (31.6%)
Thalamic fusion10 (26.3%)
Periventricular nodular heterotopia10 (26.3%)
Middle cranial fossa arachnoid cysts10 (26.3%)
Ventriculomegaly without obstructive hydrocephalus10 (26.3%)
Dysplastic corpus callosum9 (23.7%)
Hippocampal malrotation9 (23.7%)
Infratentorial arachnoid cysts5 (13.2%)
Frontal horn prominence5 (13.2%)
Cerebellar vermis hypoplasia2 (5.3%)
Mesencephalic aqueduct stenosis with hydrocephalus2 (5.3%)