title: Parotid gland surgery: 4-year review of 118 cases in an Asian population.
abstract: BACKGROUND
  To determine the presentation and management of parotid lesions requiring excision in a largely Chinese Asian population.
  
  
  METHODS
  Retrospective study of 118 consecutive parotidectomies.
  
  
  RESULTS
  Thirty-seven percent were Warthin's tumor (WT), 33% pleomorphic adenoma (PA), 21% other benign disease (OBD), and 9% malignant tumor (MT). Mean age was significantly different between benign (51 years) and malignant (40 years) lesions. MT decreased above 50 years, but increased five times with pain and two times with a noninferior pole lesion. Sensitivity of fine-needle aspiration (FNA) for differentiating benign from MT = 78%, for WT =5 8%, for PA =82%, for OBD = 28%, and for MT = 38%. CT scans did not alter WT management. Facial nerve (FN) paresis was not associated with histology, tumor size, site, or parotidectomy type.
  
  
  CONCLUSIONS
  This is the first report documenting that most benign parotid tumors are WT and not PA. MT risk is greater in those less than 50 with pain and a noninferior pole lesion. Cystic lesions such as WT require great care in the evaluation of FNA findings.
authors.affiliation: Department of Otolaryngology, Singapore General Hospital, Outram Road, Singapore 169608, Singapore.
authors.forename: Lynne Hsueh Yee
authors.initials: LH
authors.lastname: Lim
authors.forename: Siew Shuen
authors.initials: SS
authors.lastname: Chao
authors.forename: Christopher Hood Keng
authors.initials: CH
authors.lastname: Goh
authors.forename: Chee Yung
authors.initials: CY
authors.lastname: Ng
authors.forename: Yau Hong
authors.initials: YH
authors.lastname: Goh
authors.forename: Lay Wai
authors.initials: LW
authors.lastname: Khin
mesh_terms: D000235:Adenolymphoma / Q000473:pathology* / Q000601:surgery*; D008949:Adenoma, Pleomorphic / Q000473:pathology* / Q000601:surgery*; D000328:Adult; D000367:Age Factors; D001707:Biopsy, Needle; D002681:China / Q000208:ethnology; D005158:Facial Paralysis / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000150:complications; D010307:Parotid Neoplasms / Q000473:pathology* / Q000601:surgery*; D012189:Retrospective Studies; D012307:Risk Factors; D012680:Sensitivity and Specificity; D012846:Singapore; D013530:Surgical Wound Infection / Q000209:etiology