Department of Maxillofacial Surgery, University Hospital Dubrava, Zagreb, Croatia.
Int J Oral Maxillofac Surg. 2011 Sep;40(9):988-90. doi: 10.1016/j.ijom.2011.03.010. Epub 2011 Apr 14.
False aneurysm or pseudoaneurysm is usually a result of blunt trauma causing laceration of part of the vessel wall and extravasation of blood into surrounding tissue, followed by tamponade and clot formation. The wall of the pseudoaneurysm consists of perivascular fibrous tissue. Extracranial carotid artery pseudoaneurysms are relatively rare because trauma to external carotid artery branches usually results in total transection rather then partial laceration of blood vessel. Most affected branches are the superficial temporal artery, internal maxillary artery and distal facial artery, usually where they pass over the bone (zygoma or mandible). The authors present the case of a 78-year-old male patient with facial artery pseudoaneurysm in its proximal part in the submandibular region with no known evidence of trauma. To the authors' knowledge this is the first case in the literature of facial artery pseudoaneurysm without traumatic origin and the third case of proximal facial artery pseudoaneurysm. Although formation of pseudoaneurysm in the region of face and neck is rare, the authors consider that inclusion of pseudoaneurysm in the differential diagnosis of a neck mass is important.
假性动脉瘤或假性动脉瘤通常是钝性创伤导致部分血管壁破裂和血液外渗到周围组织引起的，随后发生填塞和血栓形成。假性动脉瘤的壁由血管周围纤维组织组成。颅外颈动脉假性动脉瘤相对少见，因为颈动脉分支的创伤通常导致血管完全断裂而不是部分撕裂。受影响的分支主要是颞浅动脉、上颌内动脉和远端面动脉，通常在它们经过骨骼（颧骨或下颌骨）的地方。作者报告了一例 78 岁男性患者，在颏下区域的面动脉近端出现假性动脉瘤，无已知创伤证据。据作者所知，这是文献中首例无创伤性起源的面动脉假性动脉瘤病例，也是第三例面动脉近端假性动脉瘤病例。尽管面部和颈部区域假性动脉瘤的形成很少见，但作者认为将假性动脉瘤纳入颈部肿块的鉴别诊断是很重要的。
