title: [Six cases of adenoid cystic carcinoma in external auditory canal].
abstract: OBJECTIVE
  By investigating the clinical and pathological features of adenoid cystic carcinoma in external auditory canal, we can improve our ability of diagnosis and treatment.
  
  
  METHODS
  A retrospective analysis was performed on 6 patients with adenoid cystic carcinoma in external auditory canal, including clinical manifestations, the therapy as well as the follow-up results. All cases underwent subtotal temporal bone resection or other aggressive surgical excision.
  
  
  RESULTS
  All cases were alive for a period from 8 to 21 months after subtotal temporal bone resection or other aggressive surgical excision, without any signs of regional lymph node metastasis and distal metastasis.
  
  
  CONCLUSIONS
  Adenoid cystic carcinoma in external auditory canal grows slowly, so patients can live with the tumor for a long time. But the long-term prognosis is poor. It is necessary to manipulate aggressive surgical excision at the first time to improve cure rate.
authors.affiliation: Department of Otolaryngology, Eye and ENT Hospital, Shanghai, 200031, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Du
authors.forename: Zhengmin
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D003528:Carcinoma, Adenoid Cystic; D004424:Ear Canal; D004428:Ear Neoplasms; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies