title: Pseudoaneurysm of the facial artery occurred after mandibular sagittal split ramus osteotomy.
abstract: BACKGROUND
  Pseudoaneurysms are caused by rupture of arteries with extravasation of blood. The compressed perivascular tissue forms the wall of aneurysmal sac. Pseudoaneurysm directly related with surgical procedure of sagittal split ramus osteotomy (SSRO) was reported quite rarely especially related with facial artery during the vertical osteotomy.
  
  
  METHODS
  SSRO was carried out for a 19-year-old male; the patient visited the emergency room with notable swelling 3 weeks after the surgery. We experienced severe intra-oral bleeding with surgical exploration. Angiography revealed a pseudoaneurysm of the right facial artery that might be related with vertical osteotomy over lateral cortex of the mandibular body during orthognathic surgery. This implies that the minor vascular trauma from vertical osteotomy of the mandibular body during the conventional orthognathic surgery might cause later development of pseudoaneurysm.
authors.affiliation: Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Samduck 2 Ga, Jung Gu, Daegu, South Korea.
authors.forename: H-W
authors.initials: HW
authors.lastname: Jo
authors.forename: Y-S
authors.initials: YS
authors.lastname: Kim
authors.forename: D-H
authors.initials: DH
authors.lastname: Kang
authors.forename: S-H
authors.initials: SH
authors.lastname: Lee
authors.forename: T-G
authors.initials: TG
authors.lastname: Kwon
mesh_terms: D017541:Aneurysm, False / Q000209:etiology*; D000792:Angiography; D001158:Arteries / Q000293:injuries*; D003937:Diagnosis, Differential; D004621:Embolization, Therapeutic; D005145:Face / Q000098:blood supply*; D006801:Humans; D008297:Male; D008313:Malocclusion, Angle Class III / Q000601:surgery*; D008334:Mandible / Q000098:blood supply* / Q000601:surgery*; D006472:Oral Hemorrhage / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy; D059229:Osteotomy, Sagittal Split Ramus; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000209:etiology* / Q000628:therapy; D019106:Postoperative Hemorrhage / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy; D014057:Tomography, X-Ray Computed; D055815:Young Adult