title: Hemifacial microsomia in two patients further supporting chromosomal mosaicism as a causative factor.
abstract: We report two cases with hemifacial microsomia with body asymmetry associated with mosaic trisomies. The child with mosaic trisomy 9 had skin pigmentary changes. In the boy with mosaic trisomy 22, the extra chromosome 22 originated from a maternal meiosis I error.
authors.affiliation: Center for Human Genetics, KU Leuven, Belgium.
authors.forename: T J
authors.initials: TJ
authors.lastname: de Ravel
authors.forename: E
authors.initials: E
authors.lastname: Legius
authors.forename: H
authors.initials: H
authors.lastname: Brems
authors.forename: R
authors.initials: R
authors.lastname: Van Hoestenberghe
authors.forename: P H
authors.initials: PH
authors.lastname: Gillis
authors.forename: J P
authors.initials: JP
authors.lastname: Fryns
mesh_terms: D002869:Chromosome Aberrations; D002892:Chromosomes, Human, Pair 22; D002899:Chromosomes, Human, Pair 9; D005146:Facial Asymmetry / Q000235:genetics*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008540:Meiosis; D009030:Mosaicism / Q000473:pathology*