title: Malignant parotid tumor and facial palsy.
abstract: OBJECTIVE
  To evaluate risk factors for postoperative facial palsy in patients with parotid carcinoma.
  
  
  METHODS
  We conducted a retrospective chart review of patients with parotid carcinoma who underwent parotidectomy at National Taiwan University Hospital from 1980 to 2000.
  
  
  RESULTS
  Eighty-eight patients with a mean age of 53 +/- 17 y were recruited. Sixty patients (68.2%) experienced postoperative facial palsy. Tumor size of larger than 4 cm was associated with an increased incidence of facial palsy (P = 0.0422). Facial palsy was noted in 95.5 percent of patients with facial nerve involvement and 51.3 percent of patients without facial nerve involvement (P = 0.0004). Of 42 patients with tumor over the deep lobe, 37 (88.1%) had facial palsy but only 50 percent (23 of 46) of those with tumor over the superficial lobe had facial palsy (P = 0.0001).
  
  
  CONCLUSIONS
  There were no significant associations between histopathology and facial palsy. Increasing tumor size, deep lobe tumor location, and tumor invasion of facial nerve increased the incidence of postparotidectomy facial palsy.
  
  
  CONCLUSIONS
  By paying attention to these risk factors a reduction of postoperative facial nerve palsy my be achieved.
authors.affiliation: Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.
authors.forename: Chun-Chi
authors.initials: CC
authors.lastname: Huang
authors.forename: Fen-Yu
authors.initials: FY
authors.lastname: Tseng
authors.forename: Zeng-Chang
authors.initials: ZC
authors.lastname: Chen
authors.forename: Chuan-Jen
authors.initials: CJ
authors.lastname: Hsu
authors.forename: Jeng-Yuh
authors.initials: JY
authors.lastname: Ko
authors.forename: Pei-Jen
authors.initials: PJ
authors.lastname: Lou
authors.forename: Yuh-Shyang
authors.initials: YS
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000453:epidemiology* / Q000473:pathology / Q000601:surgery; D005158:Facial Paralysis / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010307:Parotid Neoplasms / Q000453:epidemiology* / Q000473:pathology / Q000601:surgery*; D011183:Postoperative Complications; D012189:Retrospective Studies; D012737:Sex Factors