title: [Endoscopic nasal surgery for pterigopalatine fossa schwannoma].
abstract: Schwannomas are tumors of nerve sheath origin, the lesion being derived from the Schwann cells surrounding neural tissue in most of the peripheral, cranial and autonomic nerves. Schwannomas occurring in the head and neck represent 25-35% of all reported schwannomas, and most commonly arise from the acoustic or the neumogastric nerves. In the nose and paranasal sinuses these tumors are very uncommon (fewer than 4% of all schwannomas). In the pterygopalatine fossa they are very rare, and arise in this case from the ophthalmic and maxillary branches of the trigeminal nerve. In this exceptional site, the tumor is classically approached through a Caldwell-Luc incision. In this case, we report the removal of a schwannoma of the pterygopalatine fossa by endoscopic sinus surgery.
authors.affiliation: Servicio de Otorrinolaringología, Hospital Universitario Central de Asturias, Oviedo. alfonsomf@hotmail.com
authors.forename: A
authors.initials: A
authors.lastname: Martínez Ferreras
authors.forename: J P
authors.initials: JP
authors.lastname: Rodrigo Tapia
authors.forename: J L
authors.initials: JL
authors.lastname: Llorente Pendás
authors.forename: C
authors.initials: C
authors.lastname: Suárez Nieto
mesh_terms: D000328:Adult; D004724:Endoscopy / Q000379:methods*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009442:Neurilemmoma / Q000473:pathology* / Q000601:surgery*; D010255:Paranasal Sinus Neoplasms / Q000473:pathology* / Q000601:surgery*