diencephalic-mesencephalic junction dysplasia
A rare, genetic, non-syndromic cerebral malformation characterized by severe intellectual disability, progressive postnatal microcephaly, axial hypotonia, spastic quadriparesis, seizures and facial dysmorphism (bushy eyebrows, hairy forehead, broad nasal root, long flat philtrum, V-shaped upper lip). Additionally, talipes equinovarus, non-obstructive cardiomyopathy, persistent hyperplastic primary vitreous, obstructive hydrocephalus and autistic features may also be associated. On brain magnetic resonance imaging, the 'butterfly sign' is characterisitcally observed and cortical calcifications, agenesis of the corpus callosum, ventriculomegaly, brainstem dysplasia and cerebellar vermis hypoplasia have also been described.
MONDO:0003847
hereditary disease
is_a
MONDO:0021147
disorder of development or morphogenesis
is_a
diencephalic-mesencephalic junction dysplasia syndrome
exact