title: Evaluation of the effectiveness of preoperative embolization in surgery for nasopharyngeal angiofibroma.
abstract: We retrospectively analyzed the clinical data of 21 patients (22 procedures) with histologically proven nasopharyngeal angiofibromas. Eleven patients underwent preoperative intra-arterial digital subtraction angiography (IADSA) and embolization with Gelfoam. Embolization reduced the intraoperative blood loss from an average of 1136 ml in the non-embolized patients to 677 ml in the embolized cases (P < 0.05) and transfusions from an average of 836 ml to 400 ml (P < 0.01). Results again show that preoperative embolization is effective in reducing intraoperative blood loss.
authors.affiliation: Department of Otorhinolaryngology, Navy General Hospital, Beijing, P.R. China.
authors.forename: J R
authors.initials: JR
authors.lastname: Li
authors.forename: J
authors.initials: J
authors.lastname: Qian
authors.forename: X Z
authors.initials: XZ
authors.lastname: Shan
authors.forename: L
authors.initials: L
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D018322:Angiofibroma / Q000000981:diagnostic imaging / Q000628:therapy*; D015901:Angiography, Digital Subtraction / Q000379:methods; D004621:Embolization, Therapeutic / Q000379:methods*; D006801:Humans; D008297:Male; D009303:Nasopharyngeal Neoplasms / Q000000981:diagnostic imaging / Q000628:therapy*; D012189:Retrospective Studies; D016896:Treatment Outcome