title: Arterial embolization of an extrapleural hematoma from a dislocated fracture of the lumbar spine: a case report.
abstract: BACKGROUND
  We present a report of a blunt-trauma patient who developed an atypical extrapleural hematoma with hemodynamic instability following a dislocation fracture of the first lumbar vertebra. We successfully treated her with arterial embolization (AE) of the lumbar and intercostal arteries.
  
  
  METHODS
  The patient, a 74-year-old woman, was injured in a traffic accident. At the scene of the accident, she was found to be alert, and her hemodynamic condition was stable. She arrived at our hospital complaining of lumbago. A thoracoabdominal computed tomography (CT) scan with contrast enhancement showed a dislocation fracture of the first lumbar vertebra along with paravertebral and retroperitoneal hematomas. Therefore, we managed the patient conservatively with bed rest. However, 3 h after admission, her blood pressure suddenly decreased. A repeated thoracoabdominal CT scan showed enlargement of the right retroperitoneal hematoma with extravasation of the contrast medium into the right extrapleural space. Angiography was immediately performed, showing extravasation of the contrast media from the right intercostal (Th12) and lumbar arteries (L1). After arterial embolization (AE) with gelatin-sponge particles, extravasation of the contrast medium ceased, and the patient's hemodynamic condition stabilized without massive fluid resuscitation.
  
  
  CONCLUSIONS
  The extrapleural hematoma reduced in size after AE, and almost disappeared on the 14th day of hospitalization. The lumbar spinal fracture was successfully repaired on day 16, and the patient was kept in the hospital to recuperate. We believe that AE is effective for the management of intractable bleeding following fractures of the spine.
authors.affiliation: Tokai University School of Medicine, Department of Emergency and Critical Care Medicine, Isehara-city, Kanagawa, Japan. morita@is.icc.u-tokai.ac.jp
authors.forename: Seiji
authors.initials: S
authors.lastname: Morita
authors.forename: Tomoatsu
authors.initials: T
authors.lastname: Tsuji
authors.forename: Tomokazu
authors.initials: T
authors.lastname: Fukushima
authors.forename: Takeshi
authors.initials: T
authors.lastname: Yamagiwa
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Otsuka
authors.forename: Sadaki
authors.initials: S
authors.lastname: Inokuchi
mesh_terms: D000368:Aged; D004621:Embolization, Therapeutic; D005260:Female; D006406:Hematoma / Q000000981:diagnostic imaging / Q000628:therapy*; D006801:Humans; D008159:Lumbar Vertebrae / Q000293:injuries*; D011859:Radiography; D016103:Spinal Fractures / Q000097:blood / Q000150:complications*; D014949:Wounds, Nonpenetrating