title: Bilateral auricular squamous cell carcinomas with perineural invasion.
abstract: BACKGROUND
  Bilateral squamous cell carcinoma (SCC) of the external ears is a rare phenomenon, and we are unaware of instances of bilateral perineural involvement.
  
  
  OBJECTIVE
  To describe bilateral auricular SCCs, each with perineural invasion.
  
  
  METHODS
  Case report and literature review.
  
  
  RESULTS
  Histopathologic examination revealed perineural invasion in both tumors.
  
  
  CONCLUSIONS
  This appears to be an unusual presentation of bilateral auricular SCCs with perineural invasion in an elderly immunocompromised patient.
authors.affiliation: University of Texas Medical Branch, Department of Dermatology, Galveston, Texas 77555-0783, USA.
authors.forename: S R
authors.initials: SR
authors.lastname: Beaty
authors.forename: M
authors.initials: M
authors.lastname: Colome-Grimmer
authors.forename: R F
authors.initials: RF
authors.lastname: Wagner
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D004428:Ear Neoplasms / Q000473:pathology*; D004431:Ear, External / Q000294:innervation; D006801:Humans; D007165:Immunosuppression Therapy; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000276:immunology; D008297:Male; D009361:Neoplasm Invasiveness; D016609:Neoplasms, Second Primary; D010525:Peripheral Nerves / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology*