title: Spontaneous spinal epidural hematoma in a patient with acquired Factor X deficiency secondary to systemic amyloid light-chain amyloidosis.
abstract: BACKGROUND
  Spontaneous spinal epidural hematoma (SSEH) is relatively rare. SSEH with anticoagulants including warfarin and rivaroxaban (Factor Xa inhibitor) have been reported; however, SSEH with Factor X deficiency has not been described yet.
  
  
  METHODS
  Case report.
  
  
  RESULTS
  An 82-year-old woman with acquired Factor X deficiency complained of sudden onset of severe posterior neck pain. Magnetic resonance imaging demonstrated an epidural hematoma from C3 to T3 levels. Because she showed tetraparesis on the third hospital day, we performed surgery. Just before surgery, her prothrombin time-international normalized ratio was 2.49, which was immediately reversed by infusion of prothrombin complex concentrate. The patient safely underwent an emergency laminectomy from C3 to T2, in which the epidural hematoma was evacuated. Post-operatively, the patient recovered completely without rebleeding. Hematologists found acquired deficiency of Factor X in this patient with systemic amyloid light-chain amyloidosis.
  
  
  CONCLUSIONS
  To our knowledge, this is the first report of a case of SSEH with Factor X deficiency. A blood coagulation disorder should be considered in patients with SSEH.
authors: Hidetaka
authors: H
authors: Arishima
authors: Ayumi
authors: A
authors: Tada
authors: Makoto
authors: M
authors: Isozaki
authors: Ryuhei
authors: R
authors: Kitai
authors: Toshiaki
authors: T
authors: Kodera
authors: Ken-ichiro
authors: K
authors: Kikuta
authors: Katsunori
authors: K
authors: Tai
authors: Hiromichi
authors: H
authors: Iwasaki
mesh_terms: D000369:Aged, 80 and over; D000686:Amyloidosis / Q000150:complications*; D005171:Factor X Deficiency / Q000150:complications* / Q000209:etiology; D005260:Female; D046748:Hematoma, Epidural, Spinal / Q000209:etiology* / Q000601:surgery; D006801:Humans
keywords: Amyloidosis; Factor X deficiency; Prothrombin complex concentrate; Spinal cord; Spontaneous spinal epidural hematoma