title: [Arteriovenous malformation of the mandible: life-threatening manifestation during tooth extraction].
abstract: METHODS
  We report on the case of a 31-year old female presenting a massive bleeding during extraction of left lower wisdom tooth, which could be managed by local compression. In the following transfemoral angiography an extensive arteriovenous malformation (avm) in the pterygomandibular space with osseous infiltration was diagnosed and embolised during the same session. After the acute stage the malformation could be controlled by repeated embolisation, the wound being closed by use of a transposition flap.
  
  
  CONCLUSIONS
  Although arteriovenous malformations of the head and neck are rare, they can manifest with dramatic bleeding complications during surgical interventions. A thrill on palpation and auscultation may also refer to the existence of such a vascular lesion. An av-malformation may be stimulated by hormonal changes during puberty or pregnancy as well as by local trauma. Colour coded duplex sonography, magnetic resonance imaging and transfemoral angiography are suitable diagnostic tools. The treatment of choice is superselective embolisation followed by surgical resection of the vascular nidus, which should be performed by under an interdisciplinary approach.
authors.affiliation: Universitätsklinikum Tübingen, Klinik und Poliklinik für Mund-, Kiefer- und Gesichtschirurgie, Osianderstr. 2-8, 72076 Tübingen, Germany.
authors.forename: Susanne
authors.initials: S
authors.lastname: Kluba
authors.forename: Andreas
authors.initials: A
authors.lastname: Meiss
authors.forename: Nico
authors.initials: N
authors.lastname: Prey
authors.forename: Ulrike
authors.initials: U
authors.lastname: Ernemann
authors.forename: Siegmar
authors.initials: S
authors.lastname: Reinert
authors.forename: Jürgen
authors.initials: J
authors.lastname: Hoffmann
mesh_terms: D000328:Adult; D000792:Angiography; D001165:Arteriovenous Malformations / Q000150:complications / Q000175:diagnosis*; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D008334:Mandible / Q000098:blood supply*; D006472:Oral Hemorrhage / Q000209:etiology*; D011626:Pterygoid Muscles / Q000098:blood supply*; D014081:Tooth Extraction / Q000009:adverse effects*; D018615:Ultrasonography, Doppler, Color