title: [Delayed facial nerve palsy after otologic surgery].
abstract: Delayed facial nerve palsy (DFP) is rarely experienced after otologic surgeries that do not directly touch the facial nerves, such as tympano-mastoidectomy, cochlear implants, and stapes surgery, and is troublesome to both surgeons and patients if it happens. Here, we report 7 cases of DFP, including one case that developed DFP after endolymphatic sac surgery. The ratios of occurrence were as follows: 0.7% (2/305) for tympano-mastoidectomy, 0.8% (3/354) for cochlear implant, 0.4% (1/260) for stapes surgery and 1.0% (1/98) for endolymphatic sac surgery. All otologic surgeries, except for endolymphatic sac surgery, exposed the chorda tympani, and all surgeries, except for stapes surgery, underwent drilling for a mastoidectomy. Furthermore, DFP was always observed ipsilaterally to the operated ear after otologic surgeries and was never seen after benign parotid tumor surgery or total laryngectomy. Therefore, there may be a strong relationship between DFP and the procedures, used during otologic surgeries.
authors.affiliation: Department of Otolaryngology, Osaka University, Osaka.
authors.forename: Tadashi
authors.initials: T
authors.lastname: Kitahara
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kubo
authors.forename: Katsumi
authors.initials: K
authors.lastname: Doi
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Mishiro
authors.forename: Kazumasa
authors.initials: K
authors.lastname: Kondoh
authors.forename: Arata
authors.initials: A
authors.lastname: Horii
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Okumura
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Miyahara
mesh_terms: D000328:Adult; D000368:Aged; D002675:Child, Preschool; D019929:Cochlear Implantation; D004712:Endolymphatic Sac; D005158:Facial Paralysis / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013506:Otologic Surgical Procedures; D011183:Postoperative Complications; D013201:Stapes Surgery; D013997:Time Factors; D014433:Tympanoplasty