title: Pre-operative embolization of juvenile nasopharyngeal angiofibromas with gelfoam.
abstract: Two patients with juvenile nasopharyngeal angiofibromas are presented. Different haemorrhage-reducing operative methods were used. The cases illustrate the hazards of permanent ligation of the external carotid artery and the advantage of pre-operative embolization with absorbable Gelfoam.
mesh_terms: D000293:Adolescent; D002342:Carotid Artery, External / Q000601:surgery; D004621:Embolization, Therapeutic; D005781:Gelatin Sponge, Absorbable; D018219:Histiocytoma, Benign Fibrous / Q000601:surgery*; D006801:Humans; D008026:Ligation; D008297:Male; D009303:Nasopharyngeal Neoplasms / Q000601:surgery*; D009364:Neoplasm Recurrence, Local; D011300:Preoperative Care / Q000379:methods*; D012086:Reoperation