title: Preoperative transarterial embolization using gelatin sponge for hypervascular bone and soft tissue tumors in the pelvis or extremities.
abstract: BACKGROUND
  Preoperative transcatheter arterial embolization for hypervascular bone and soft tissue tumors plays an important role in reducing intraoperative blood loss (IBL).
  
  
  OBJECTIVE
  To evaluate the use of a gelatin sponge in preoperative transcatheter arterial embolization for hypervascular bone and soft tissue tumors in the pelvis or extremities.
  
  
  METHODS
  Thirty-seven patients (21 men, 16 women; median age, 61 years; age range, 23-79 years) underwent preoperative transcatheter arterial embolization between April 2004 and January 2015. Medical records and images were reviewed, and the technical success rate, clinical success rate, and complications were evaluated. Technical success was defined as a devascularization rate of 75% or higher, and clinical success was defined as intraoperative blood loss (IBL) <1500 mL in cases undergoing surgery within 3 days of transarterial embolization and <3000 mL in cases operated 4 or more days later.
  
  
  RESULTS
  Tumor sizes were in the range of 2.0-13.0 cm (median, 5.0 cm). The devascularization rate was decreased by >75% at follow-up angiography in all cases, and the technical success rate was 100 % (37/37). The median IBL was 491 mL (range, 30-3800 mL), and the clinical success rate was 89% (33/37). The minor complication of local pain was observed in 13 out of 37 cases (35%) during or after embolization, but was controllable by an analgesic.
  
  
  CONCLUSIONS
  Preoperative transarterial embolization using a gelatin sponge appears to be feasible and safe, and may contribute to decreasing IBL.
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan mshimohira@gmail.com.
authors.forename: Masashi
authors.initials: M
authors.lastname: Shimohira
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Nagai
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Takuya
authors.initials: T
authors.lastname: Hashizume
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Motoo
authors.initials: M
authors.lastname: Nakagawa
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Ozawa
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Keita
authors.initials: K
authors.lastname: Sakurai
authors.affiliation: Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Matsushita
authors.affiliation: Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yamada
authors.affiliation: Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Takanobu
authors.initials: T
authors.lastname: Otsuka
authors.affiliation: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Yuta
authors.initials: Y
authors.lastname: Shibamoto
mesh_terms: D000328:Adult; D000368:Aged; D000818:Animals; D016063:Blood Loss, Surgical / Q000517:prevention & control / Q000706:statistics & numerical data; D001859:Bone Neoplasms / Q000098:blood supply* / Q000000981:diagnostic imaging / Q000601:surgery*; D004621:Embolization, Therapeutic / Q000379:methods*; D005121:Extremities / Q000000981:diagnostic imaging / Q000601:surgery; D005260:Female; D005780:Gelatin / Q000627:therapeutic use; D006801:Humans; D008297:Male; D008875:Middle Aged; D010388:Pelvis / Q000000981:diagnostic imaging / Q000601:surgery; D011161:Porifera; D011300:Preoperative Care / Q000379:methods*; D011859:Radiography; D012189:Retrospective Studies; D012983:Soft Tissue Neoplasms / Q000098:blood supply* / Q000000981:diagnostic imaging / Q000601:surgery*; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D005780:Gelatin
keywords: Embolization; gelatin sponge; hypervascular