title: [Ring-20 chromosome: a new syndrome].
abstract: A comparative study of five observations of a r (20) syndrome characterized by facial dysmorphism, the absence of severe malformations, and rather late onset of encephalopathy and seizures.
mesh_terms: D001927:Brain Diseases / Q000175:diagnosis / Q000235:genetics*; D002648:Child; D002869:Chromosome Aberrations; D002903:Chromosomes, Human, 19-20; D000013:Congenital Abnormalities / Q000235:genetics; D005145:Face / Q000002:abnormalities*; D005260:Female; D006801:Humans; D007621:Karyotyping; D012640:Seizures / Q000175:diagnosis / Q000235:genetics*; D013577:Syndrome
vernacular_title: Chromosome 20 en anneau: un nouveau syndrome.