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Clinical diagnosis and treatment outcomes for parapharyngeal space schwannomas: A single‐institution review of 21 cases
Author(s) -
Sato Yoichiro,
Imanishi Yorihisa,
Tomita Toshiki,
Ozawa Hiroyuki,
Sakamoto Koji,
Fujii Ryoichi,
Shigetomi Seiji,
Habu Noboru,
Otsuka Kuninori,
Watanabe Yoshihiro,
Sekimizu Mariko,
Ogawa Kaoru
Publication year - 2018
Publication title -
head and neck
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.012
H-Index - 127
eISSN - 1097-0347
pISSN - 1043-3074
DOI - 10.1002/hed.25021
Subject(s) - enucleation , medicine , schwannoma , parapharyngeal space , incidence (geometry) , surgery , resection , optics , physics
Background Because the incidence of schwannoma arising from the parapharyngeal space (PPS) is very low, no studies have analyzed extirpation methods and postoperative neurological complications exclusively in PPS schwannomas. Methods The preoperative diagnosis and clinical outcomes of surgical treatment in 21 patients with PPS schwannoma who underwent surgery were investigated. Results Neurological deficit of the involved nerve developed in all patients regardless of the extirpation method used. However, the incidence of first bite syndrome in sympathetic chain schwannoma was significantly lower after intracapsular enucleation (40%) than after total resection (100%; P = .045). Furthermore, the incidence of postoperative complications unrelated to the involved nerve was lower after intracapsular enucleation (0%) than after total resection (42.9%; P = .055). Conclusion Although postoperative neurological deficit of the involved nerve was unavoidable in PPS schwannoma, intracapsular enucleation could be beneficial by reducing its severity and the incidence of complications unrelated to the involved nerve.