title: Costello syndrome: report of six patients including one with an embryonal rhabdomyosarcoma.
abstract: Costello syndrome was first described in 1971. Besides papillomata, which were part of the initial description, patients tends to develop benign tumours of ectodermal origin. Aetiology is yet unknown but it is supposed to be the result of a sporadic dominant mutation. We report six patients with typical clinical findings and emphasise the importance of cardiac manifestations and the tendency to develop tumours. One patient developed an embryonal rhabdomyosarcoma, the occurrence of which has been reported twice before in patients with Costello syndrome.
  
  
  CONCLUSIONS
  There might be a causal link between the development of rare tumours and this genetic disorder which may provide a new clue concerning the identification of the gene involved in Costello syndrome.
authors.affiliation: Centre de Genetique Medicale, Hopital Timone Enfant, 13385 Marseilles cedex 5, France.
authors.forename: S
authors.initials: S
authors.lastname: Sigaudy
authors.forename: G
authors.initials: G
authors.lastname: Vittu
authors.forename: A
authors.initials: A
authors.lastname: David
authors.forename: J
authors.initials: J
authors.lastname: Vigneron
authors.forename: D
authors.initials: D
authors.lastname: Lacombe
authors.forename: A
authors.initials: A
authors.lastname: Moncla
authors.forename: E
authors.initials: E
authors.lastname: Flori
authors.forename: N
authors.initials: N
authors.lastname: Philip
mesh_terms: D002312:Cardiomyopathy, Hypertrophic / Q000209:etiology; D002648:Child; D002675:Child, Preschool; D019465:Craniofacial Abnormalities; D002658:Developmental Disabilities; D005260:Female; D006330:Heart Defects, Congenital; D006801:Humans; D007223:Infant; D008297:Male; D011597:Psychomotor Performance; D018233:Rhabdomyosarcoma, Embryonal / Q000235:genetics; D013577:Syndrome