Ring 20 chromosome phenotype.
A baby with a 46,XY,r(20) karyotype is described. The distinguishing features of this rare chromosome anomaly are analysed in the light of the suggested r(20) syndrome.
D000015:Abnormalities, Multiple / Q000235:genetics* / Q000503:physiopathology; D002869:Chromosome Aberrations; D002890:Chromosomes, Human, Pair 20; D006801:Humans; D008297:Male; D010641:Phenotype; D012303:Ring Chromosomes