External auditory canal exostoses

Exostosis of the external auditory canal (also known as surfer's ear), is a benign bony overgrowth of the bony external auditory canal brought about by exposure to cold wind and water combined.

Radiographic features

  • broad-based or more focal circumferential bony overgrowth of the osseous external auditory canal
  • bilateral

Differential diagnosis

See also

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Article information

rID: 4054
System: Head & Neck
Tags: stub, refs
Synonyms or Alternate Spellings:
  • Surfer's ear
  • Exostosis of the ear canal
  • Exostosis of the external auditory canal (EAC)
  • EAC exostosis
  • EAC exostoses
  • External ear canal exostosis

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Cases and figures

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    Case 1 - exostosis of the ear canal
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    Case 2
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    Case 3
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    Case 4
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