title: Agnathia and associated malformations in a male rhesus monkey.
abstract: BACKGROUND
  Agnathia is a rare malformation characterized by the absence of the mandible.
  
  
  METHODS
  A male rhesus monkey with malformations was found dead and studied by internal examination, radiographs and histopathology.
  
  
  RESULTS
  A case of a rare first branchial arch anomaly with agenesis of the mandible and tongue is presented. The animal also had visceral deformities. However, ears were normal in shape and only slightly low in position. The craniofacial malformations may reflect incomplete separation of the first branchial arch into its maxillary and mandibular processes.
  
  
  CONCLUSIONS
  The association between the craniofacial and other corporal anomalies is unclear.
authors.affiliation: Oswaldo Cruz Foundation, Center for Laboratory Animal Breeding, Department of Primatology, Av. Brasil, 4365 Manguinhos, Brazil. bibi@fiocruz.br
authors.forename: B
authors.initials: B
authors.lastname: Goldschmidt
authors.forename: C A
authors.initials: CA
authors.lastname: Lopes
authors.forename: M
authors.initials: M
authors.lastname: Moura
authors.forename: D M
authors.initials: DM
authors.lastname: Fasano
authors.forename: M C R
authors.initials: MC
authors.lastname: Andrade
authors.forename: L B
authors.initials: LB
authors.lastname: Cysne
authors.forename: M B
authors.initials: MB
authors.lastname: Gonçalves
authors.forename: J S
authors.initials: JS
authors.lastname: Bravin
authors.forename: T
authors.initials: T
authors.lastname: Kugelmeier
authors.forename: C F
authors.initials: CF
authors.lastname: Viana
authors.forename: F A
authors.initials: FA
authors.lastname: Silva
authors.forename: A M
authors.initials: AM
authors.lastname: Marinho
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D019465:Craniofacial Abnormalities / Q000662:veterinary*; D004065:Digestive System Abnormalities / Q000662:veterinary; D005260:Female; D008253:Macaca mulatta / Q000002:abnormalities*; D008297:Male; D008334:Mandible / Q000002:abnormalities*; D014059:Tongue / Q000002:abnormalities*