Congenital malformations associated with a ring 4 chromosome.
D000015:Abnormalities, Multiple / Q000235:genetics*; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D002905:Chromosomes, Human, 4-5; D006801:Humans; D007231:Infant, Newborn; D007621:Karyotyping; D008297:Male; D008831:Microcephaly