title: Malignant cylindroma of the external auditory canal.
abstract: OBJECTIVE
  This report describes a case of a malignant cylindroma arising in the external auditory canal.
  
  
  METHODS
  Retrospective surgical case review.
  
  
  METHODS
  Tertiary care teaching hospital.
  
  
  METHODS
  Wide local excision with margin control.
  
  
  RESULTS
  Local control of disease at 2-year follow-up.
  
  
  CONCLUSIONS
  To our knowledge, this is the first report describing a malignant degeneration of cylindroma in the external auditory canal. This tumor represents an extremely rare cutaneous neoplasm, thus raising diagnostic and therapeutic challenges.
authors.affiliation: New York Eye & Ear Infirmary, New York, NY 10003, USA. gmashkevich@nyee.edu
authors.forename: Grigoriy
authors.initials: G
authors.lastname: Mashkevich
authors.forename: Samir
authors.initials: S
authors.lastname: Undavia
authors.forename: Codrin
authors.initials: C
authors.lastname: Iacob
authors.forename: Joseph
authors.initials: J
authors.lastname: Arigo
authors.forename: Christopher
authors.initials: C
authors.lastname: Linstrom
mesh_terms: D003528:Carcinoma, Adenoid Cystic / Q000473:pathology / Q000601:surgery*; D004424:Ear Canal / Q000601:surgery*; D004428:Ear Neoplasms / Q000473:pathology / Q000601:surgery*; D004433:Earache; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D012189:Retrospective Studies; D012626:Sebaceous Gland Neoplasms / Q000473:pathology / Q000601:surgery*; D014012:Tinnitus; D016896:Treatment Outcome