title: Subsequently occurring bilateral iliopsoas hematoma: a case report.
abstract: BACKGROUND
  Spontaneous bilateral iliopsoas hematomas is a rare complication after anticoagulant therapy. Furthermore, the onset of bilateral iliopsoas hematoma is unknown because the causes are unclear.
  
  
  METHODS
  A 65-year-old man on anticoagulant therapy after mechanical aortic valve replacement was admitted after presenting with severe pain in the left flank and abdomen. Abdominal CT revealed a large left-sided iliopsoas hematoma with extravasation. Fresh frozen plasma was transfused due to prolonged prothrombin time. Transarterial embolization was successfully performed. During the hospital stay, follow-up abdominal CT was performed and a small right-sided iliopsoas hematoma was detected. This was closely observed and an intervention was not performed, as the patient was asymptomatic. The final CT prior to discharge revealed a reduction in size of each hematoma.
  
  
  CONCLUSIONS
  Spontaneous bilateral iliopsoas hematoma can be developed subsequently. Patients with unilateral iliopsoas hematoma should be closely monitored for development of bilateral iliopsoas hematoma.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hospital, Chonnam National University School of Medicine, 42, Jebong-ro, Gwangju, Dong-gu, 501-757, South Korea.
authors.forename: Kyo Seon
authors.initials: KS
authors.lastname: Lee
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hospital, Chonnam National University School of Medicine, 42, Jebong-ro, Gwangju, Dong-gu, 501-757, South Korea.
authors.forename: In Seok
authors.initials: IS
authors.lastname: Jeong
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hospital, Chonnam National University School of Medicine, 42, Jebong-ro, Gwangju, Dong-gu, 501-757, South Korea.
authors.forename: Sang Gi
authors.initials: SG
authors.lastname: Oh
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hospital, Chonnam National University School of Medicine, 42, Jebong-ro, Gwangju, Dong-gu, 501-757, South Korea. bhahn@chonnam.ac.kr.
authors.forename: Byung Hee
authors.initials: BH
authors.lastname: Ahn
mesh_terms: D000368:Aged; D000925:Anticoagulants / Q000009:adverse effects*; D004621:Embolization, Therapeutic / Q000379:methods*; D006406:Hematoma / Q000139:chemically induced* / Q000175:diagnosis / Q000628:therapy; D006801:Humans; D008297:Male; D016658:Psoas Muscles / Q000098:blood supply*; D014057:Tomography, X-Ray Computed
chemical_list: D000925:Anticoagulants